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Rockville, MD
Rockville is a city in and the county seat of Montgomery County, Maryland, United States, and is part of the Washington metropolitan area. The 2020 census tabulated Rockville's population at 67,117, making it the fourth-largest incorporated city in Maryland. Rockville, along with neighboring Gaithersburg and Bethesda, is at the core of the Interstate 270 Technology Corridor which is home to numerous software and biotechnology companies as well as several federal government institutions. The city, one of the major retail hubs in Montgomery County, has several upscale regional shopping centers. History Early history Situated in the Piedmont region and crossed by three creeks ( Rock Creek, Cabin John Creek, and Watts Branch), Rockville provided an excellent refuge for semi-nomadic Native Americans as early as 8000 BC. By the first millennium BC, a few of these groups had settled down into year-round agricultural communities that exploited the native flora, including sunflower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Municipalities In Maryland
Maryland is a state located in the Southern United States. As of the 2020 United States census, Maryland is the 18th-most populous state with inhabitants and the ninth-smallest by land area, spanning of land. The state is divided into 23 counties and contains 157 municipalities consisting of cities, towns, or villages. Its municipalities cover only of the state's land mass but are home to of its population. As Maryland does not have minor civil divisions such as townships, areas outside of municipalities have no government below the county level. With the exception of Baltimore, which was chartered by the state Constitution, municipalities in Maryland are self-governing municipalities chartered as cities, towns, or villages by an Act of the Maryland General Assembly or, in some cases, by a referendum. Municipalities are the lowest tier administrative units in the state, and all except Baltimore are also subject to county administration. Despite the designations of city, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaithersburg, Maryland
Gaithersburg ( ) is a city in Montgomery County, Maryland, United States. At the time of the 2020 United States census, Gaithersburg had a population of 69,657, making it the third-largest incorporated city and the ninth-most populous community in the state. Gaithersburg is located to the northwest of Washington, D.C., and is considered a suburb and a primary city within the Washington metropolitan area. Gaithersburg was incorporated as a town in 1878 and as a city in 1968. The National Institute of Standards and Technology (NIST) is headquartered in Gaithersburg directly west of I-270. Other major employers in the city include IBM, Lockheed Martin Information Systems and Global Services business area headquarters, AstraZeneca. Gaithersburg is also the location of the garrison of the United States Army Reserve Legal Command. History Gaithersburg was settled in 1765 as a small agricultural settlement known as Log Town near the present day Summit Hall on Ralph Crabb's 1725 lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunflower
The common sunflower (''Helianthus annuus'') is a species of large annual forb of the daisy family Asteraceae. The common sunflower is harvested for its edible oily seeds, which are often eaten as a snack food. They are also used in the production of cooking oil, as food for livestock, as bird food, and as plantings in domestic gardens for aesthetics. Wild plants are known for their multiple flower heads, whereas the domestic sunflower often possesses a single large flower head atop an unbranched stem. Description The plant has an erect rough-hairy stem, reaching typical heights of . The tallest sunflower on record achieved . Sunflower leaves are broad, coarsely toothed, rough and mostly alternate; those near the bottom are largest and commonly heart-shaped. Flower The plant flowers in summer. What is often called the " flower" of the sunflower is actually a "flower head" ( pseudanthium), wide, of numerous small individual five-petaled flowers (" florets"). The out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural
Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than . However, five of every six farms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Millennium BC
File:1st millennium BC.jpg, 400x400px, From top left clockwise: The Parthenon, a former temple in Athens, Athens, Greece; Aristotle, Greek philosopher; Gautama Buddha, a spiritual teacher and the founder of Buddhism; Wars of Alexander the Great last from 336 BC to 323 BC; Letters of the Greek alphabet; People working during the Iron Age; Roman dictator, Julius Caesar is assassinated by the Roman Senate in 44 BC. (Background: A mural from the Assyria, Assyrian Empire which dissolved in the 7th century BC) rect 42 28 559 285 Parthenon rect 626 65 923 350 Aristotle rect 993 28 1239 387 Gautama Buddha rect 42 372 425 616 Assassination of Julius Caesar rect 483 388 749 502 Greek alphabet rect 775 468 1255 698 Wars of Alexander the Great rect 453 535 731 698 Iron Age rect 1 1 1279 719 Assyrian Empire The 1st millennium BC, also known as the last millennium BC, was the period of time lasting from the years 1000 BC to 1 BC (10th century BC, 10th to 1st century BC, 1st centuries Before Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Americans Of The United States
Native Americans (also called American Indians, First Americans, or Indigenous Americans) are the Indigenous peoples of the United States, particularly of the lower 48 states and Alaska. They may also include any Americans whose origins lie in any of the indigenous peoples of North or South America. The United States Census Bureau publishes data about "American Indians and Alaska Natives", whom it defines as anyone "having origins in any of the original peoples of North and South America ... and who maintains tribal affiliation or community attachment". The census does not, however, enumerate "Native Americans" as such, noting that the latter term can encompass a broader set of groups, e.g. Native Hawaiians, which it tabulates separately. The European colonization of the Americas from 1492 resulted in a precipitous decline in the size of the Native American population because of newly introduced diseases, including weaponized diseases and biological warfare by colonizers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomad
Nomads are communities without fixed habitation who regularly move to and from areas. Such groups include hunter-gatherers, pastoral nomads (owning livestock), tinkers and trader nomads. In the twentieth century, the population of nomadic pastoral tribes slowly decreased, reaching an estimated 30–40 million nomads in the world . Nomadic hunting and gathering—following seasonally available wild plants and game—is by far the oldest human subsistence method known. Pastoralists raise herds of domesticated livestock, driving or accompanying them in patterns that normally avoid depleting pastures beyond their ability to recover. Nomadism is also a lifestyle adapted to infertile regions such as steppe, tundra, or ice and sand, where mobility is the most efficient strategy for exploiting scarce resources. For example, many groups living in the tundra are reindeer herders and are semi-nomadic, following forage for their animals. Sometimes also described as "nomadic" are vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watts Branch (Potomac River)
Watts Branch is a tributary stream of the Potomac River in Montgomery County, Maryland. Course The headwaters of the stream originate in the city of Rockville, and the branch flows southwest for ,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 under the C&O Canal near Swain's Lock, to the Potomac River, which drains to the Chesapeake Bay. The watershed area is about .City of Rockville, MD''Watts Branch Watershed Study and Management Plan Final Report.''August 6, 2001. Portions of Watts Branch flow through a stream valley park, a mostly undeveloped natural area which acts as a riparian buffer zone to help minimize stream bank erosion and filter pollutants from stormwater runoff. Development impacts on water quality While some parts of the Watts Branch watershed are parkland or remain forested, the area is adjacent to Rockville town center and the Interstate 270 corridor. This community has experie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabin John Creek
Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland. The watershed covers an area of . The headwaters of the creek originate in the city of Rockville, and the creek flows southward for U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 15, 2011 to the Potomac River. History Early land records in 1715 cite Captain John's Run, now Cabin John Creek. The toponym "Cabin John" is thought to be a corruption of the name "Captain John", but the origin of the name remains unresolved. Course The headwaters of the creek originate in the city of Rockville. The Cabin John Stream Valley Trail follows the course of the creek for , passing through Cabin John Regional Park and Cabin John Local Park. The Union Arch Bridge carries MacArthur Boulevard and the Washington Aqueduct over the stream about 1/4 mile before the creek flows through a culvert under the Chesapeake and Ohio Canal and empti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Creek (Potomac River)
Rock Creek is a tributary of the Potomac River, in the United States, that empties into the Atlantic Ocean via the Chesapeake Bay. The creekU.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 drains about . Its final quarter-mile (400 m) is affected by tides. Geography Course The creek rises from a culvert under Dorsey Road at the north edge of Laytonsville Golf Course in Montgomery County, Maryland. A dam forms a small lake near its source. After exiting the golf course, Rock Creek flows between residential developments until it meets Agricultural History Farm Park, where the Upper Rock Creek Trail starts. It flows underneath the Intercounty Connector, which crosses it on a large arch bridge visible from the trail. It then flows into Lake Needwood at Rock Creek Regional Park in Maryland's Derwood– Rockville area. South of the Lake Needwood Dam, Rock Creek flows in a deep gorge and is p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stream
A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a stream may be referred to by a variety of local or regional names. Long, large streams are usually called rivers, while smaller, less voluminous and more intermittent river, intermittent streams are known, amongst others, as brook, creek, rivulet, rill, run, tributary, feeder, freshet, narrow river, and streamlet. The flow of a stream is controlled by three inputs – surface runoff (from precipitation or meltwater), daylighting (streams), daylighted subterranean river, subterranean water, and surfaced groundwater (Spring (hydrology), spring water). The surface and subterranean water are highly variable between periods of rainfall. Groundwater, on the other hand, has a relatively constant input and is controlled more by long-term patterns of pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piedmont (United States)
The Piedmont ( ) is a plateau region located in the Eastern United States. It is situated between the Atlantic Plain and the Blue Ridge Mountains, stretching from New York in the north to central Alabama in the south. The Piedmont Province is a physiographic province of the larger Appalachian Highlands physiographic division and consists of the Piedmont Upland, and the Piedmont Lowlands sections. The Atlantic Seaboard Fall Line marks the Piedmont's eastern boundary with the Coastal Plain. To the west, it is mostly bounded by the Blue Ridge Mountains, the easternmost range of the Appalachians. The width of the Piedmont varies, being quite narrow above the Delaware River but nearly 300 miles (475 km) wide in North Carolina. The Piedmont's area is approximately . The French word ''Piedmont'' (modern spelling ''Piémont'') comes from the Italian , from Latin , meaning " foothill" or, literally, "at the foot of the mountains"; it is the name of the northwestern Italia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
