. . Wildlife and preservation Defense of Florida's northern border with the United States was minor during the second Spanish period the region became a haven for escaped slaves and a base for Indian attacks against U.S territories and the U.S pressed Spain for reform. Downtown Miami is centered on the Central business district (CBD) best known by local Miamians as simply "Downtown" Although distinct neighborhoods with different characters the following neighborhoods are often labeled under the umbrella term of "Downtown Miami":. .
Initial attempts at developing agriculture near Lake Okeechobee were successful but the nutrients in the peat were rapidly removed In a process called soil subsidence oxidation of peat causes loss of volume Bacteria decompose dead sawgrass slowly underwater without oxygen When the water was drained in the 1920s and bacteria interacted with oxygen an aerobic reaction occurred Microorganisms degraded the peat into carbon dioxide and water Some of the peat was burned by settlers to clear the land Some homes built in the areas of early farms had to have their foundations moved to stilts as the peat deteriorated; other areas lost approximately 8 feet (2.4 m) of soil depth. . Virginia Key is an 863-acre (3.49 km2) barrier island in Miami Florida United States in Biscayne Bay south of Brickell and north of Key Biscayne It is accessible from the mainland via the Rickenbacker Causeway. The economic prosperity of the 1920s set the conditions for a real estate bubble in Florida Miami had an image as a tropical paradise and outside investors across the United States began taking an interest in Miami real estate Due in part to the publicity talents of audacious developers such as Carl G Fisher of Miami Beach famous for purchasing a huge lighted billboard in New York's Times Square proclaiming "It's June in Miami" property prices rose rapidly on speculation and a land and development boom ensued Brokers and dealers speculated wildly in all classes of commodities as well ordering supplies vastly in excess of what was actually needed and even sending shipments to only a general destination with the end result being that railroad freight cars became stranded in the state choking the movement of rail traffic, Government Center (NW 1st Street and 1st Avenue), Calle Ocho Calusa and Tequesta. .
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