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St. Marks Light
The St. Marks Light is the second-oldest lighthouse, light station in Florida. It is located on the east side of the mouth of the St. Marks River, on Apalachee Bay. Historic background In the 1820s, the town of St. Marks, Florida was considered an important port of entry. The town served as a port for the prosperous planting region of Middle Florida and some counties of South Georgia (U.S. state), Georgia. Growers hauled their agricultural products down to the port town in wagons by way of an early road which connected the then territorial capital of Tallahassee, Florida, Tallahassee to the town of St. Marks. Later, this road would be widened and improved upon by the Tallahassee Railroad Company and would become the state's first Rail transport, railroad. Once the agricultural products reached the new port town, they were loaded aboard boats for shipment to New Orleans and/or St. Augustine, Florida, St. Augustine. There were, however, problems in navigating both the Apalachee Bay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apalachee Bay
Apalachee Bay is a bay in the northeastern Gulf of Mexico occupying an indentation of the Florida coast to the west of where the Florida peninsula joins the United States mainland. It is bordered by Taylor County, Florida, Taylor, Jefferson County, Florida, Jefferson, Wakulla County, Florida, Wakulla, and Franklin County, Florida, Franklin counties. The Aucilla River, Aucilla, Econfina River, Econfina, St. Marks River, St. Marks, and Ochlockonee River, Ochlockonee rivers drain into the bay. In 1528 five boats were constructed by Pánfilo de Narváez in the bay. It is named for the Apalachee tribe which lived between the Aucilla and Ochlockonee rivers until the 18th century. Most of the bay's coast is the St. Marks National Wildlife Refuge. Underwater archaeological sites Beginning in the 1980s submerged archaeological sites have been identified and examined on the seabed of Apalachee Bay. During the height of the last glacial period, global sea levels were at least lower than i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston
Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- most populous city in the country. The city boundaries encompass an area of about and a population of 675,647 as of 2020. It is the seat of Suffolk County (although the county government was disbanded on July 1, 1999). The city is the economic and cultural anchor of a substantially larger metropolitan area known as Greater Boston, a metropolitan statistical area (MSA) home to a census-estimated 4.8 million people in 2016 and ranking as the tenth-largest MSA in the country. A broader combined statistical area (CSA), generally corresponding to the commuting area and including Providence, Rhode Island, is home to approximately 8.2 million people, making it the sixth most populous in the United States. Boston is one of the oldest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Plane
In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of a rotationally symmetric, focal, optical system. These are the '' focal points'', the principal points, and the nodal points. For ''ideal'' systems, the basic imaging properties such as image size, location, and orientation are completely determined by the locations of the cardinal points; in fact only four points are necessary: the focal points and either the principal or nodal points. The only ideal system that has been achieved in practice is the plane mirror, however the cardinal points are widely used to ''approximate'' the behavior of real optical systems. Cardinal points provide a way to analytically simplify a system with many components, allowing the imaging characteristics of the system to be approximately determined with simple calculations. Explanation The cardinal points lie on the optical axis of the optical system. Each point is defined by the effect the opti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blockade
A blockade is the act of actively preventing a country or region from receiving or sending out food, supplies, weapons, or communications, and sometimes people, by military force. A blockade differs from an embargo or sanction, which are legal barriers to trade rather than physical barriers. It is also distinct from a siege in that a blockade is usually directed at an entire country or region, rather than a fortress or city and the objective may not always be to conquer the area. While most blockades historically took place at sea, blockades are also used on land to prevent entrance of an area. For example, Armenia is a landlocked country that Turkey and Azerbaijan blockade. Thus, Armenia cannot conduct international trade through those countries, and mainly trades through Georgia. This restricts the country's economic development. A blockading power can seek to cut off all maritime transport from and to the blockaded country; although stopping all land transport to an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union (American Civil War)
During the American Civil War, the Union, also known as the North, referred to the United States led by President Abraham Lincoln. It was opposed by the secessionist Confederate States of America (CSA), informally called "the Confederacy" or "the South". The Union is named after its declared goal of preserving the United States as a constitutional union. "Union" is used in the U.S. Constitution to refer to the founding formation of the people, and to the states in union. In the context of the Civil War, it has also often been used as a synonym for "the northern states loyal to the United States government;" in this meaning, the Union consisted of 20 free states and five border states. The Union Army was a new formation comprising mostly state units, together with units from the regular U.S. Army. The border states were essential as a supply base for the Union invasion of the Confederacy, and Lincoln realized he could not win the war without control of them, especially Maryla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confederate States Of America
The Confederate States of America (CSA), commonly referred to as the Confederate States or the Confederacy was an unrecognized breakaway republic in the Southern United States that existed from February 8, 1861, to May 9, 1865. The Confederacy comprised U.S. states that declared secession and warred against the United States during the American Civil War: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas, Virginia, Arkansas, Tennessee, and North Carolina. Kentucky and Missouri also declared secession and had full representation in the Confederate Congress, though their territory was largely controlled by Union forces. The Confederacy was formed on February 8, 1861, by seven slave states: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas. All seven were in the Deep South region of the United States, whose economy was heavily dependent upon agriculture—particularly cotton—and a plantation system that relied upon enslaved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Civil War
The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states that had seceded. The central cause of the war was the dispute over whether slavery would be permitted to expand into the western territories, leading to more slave states, or be prevented from doing so, which was widely believed would place slavery on a course of ultimate extinction. Decades of political controversy over slavery were brought to a head by the victory in the 1860 U.S. presidential election of Abraham Lincoln, who opposed slavery's expansion into the west. An initial seven southern slave states responded to Lincoln's victory by seceding from the United States and, in 1861, forming the Confederacy. The Confederacy seized U.S. forts and other federal assets within their borders. Led by Confederate President Jefferson Davis, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1840–1849 Atlantic Hurricane Seasons
This article encompasses the 1840–1849 Atlantic hurricane seasons. While data is not available for every storm that occurred, some parts of the coastline were populated enough to give data of hurricane occurrences. Each season was an ongoing event in the annual cycle of tropical cyclone formation in the Atlantic basin. Most tropical cyclone formation occurs between June 1 and November 30. 1840 Tropical Storm One June 19–23. In the middle of June, a tropical storm passed west of Lake Charles, Louisiana accompanied by several days of heavy rain. Strong winds on June 21 damaged corn crops. Tropical Storm Two September 17–18 tropical storm struck Galveston Texas. Tropical Storm Three On an unspecified date in 1840, a hurricane reportedly caused severe flooding that destroyed entire villages at the mouth of the Rio Grande. Unclear whether these events are related to prior storm that struck Galveston.Chenoweth, p. 64 1841 Tropical Storm One August 23–24. tropical storm repor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane
A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane (), typhoon (), tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a strong tropical cyclone that occurs in the Atlantic Ocean or northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean. In the Indian Ocean, South Pacific, or (rarely) South Atlantic, comparable storms are referred to simply as "tropical cyclones", and such storms in the Indian Ocean can also be called "severe cyclonic storms". "Tropical" refers to the geographical origin of these systems, which form almost exclusively over tropical seas. "Cyclone" refers to their winds moving in a circle, whirling round ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erosion
Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distinct from weathering which involves no movement. Removal of rock or soil as clastic sediment is referred to as ''physical'' or ''mechanical'' erosion; this contrasts with ''chemical'' erosion, where soil or rock material is removed from an area by dissolution. Eroded sediment or solutes may be transported just a few millimetres, or for thousands of kilometres. Agents of erosion include rainfall; bedrock wear in rivers; coastal erosion by the sea and waves; glacial plucking, abrasion, and scour; areal flooding; wind abrasion; groundwater processes; and mass movement processes in steep landscapes like landslides and debris flows. The rates at which such processes act control how fast a surface is eroded. Typically, physical erosion procee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seminole
The Seminole are a Native American people who developed in Florida in the 18th century. Today, they live in Oklahoma and Florida, and comprise three federally recognized tribes: the Seminole Nation of Oklahoma, the Seminole Tribe of Florida, and the Miccosukee Tribe of Indians of Florida, as well as independent groups. The Seminole people emerged in a process of ethnogenesis from various Native American groups who settled in Spanish Florida beginning in the early 1700s, most significantly northern Muscogee Creeks from what is now Georgia and Alabama. The word "Seminole" is derived from the Muscogee word ''simanó-li''. This may have been adapted from the Spanish word ''cimarrón'', meaning "runaway" or "wild one". Seminole culture is largely derived from that of the Creek; the most important ceremony is the Green Corn Dance; other notable traditions include use of the black drink and ritual tobacco. As the Seminole adapted to Florida environs, they developed local traditions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
