Louisiana's capital is Baton Rouge and its largest city is New Orleans. The largest parish by population is East Baton Rouge Parish, and the largest by total area is Plaquemines.Louisiana is bordered by Arkansas to the north, Mississippi to the east, Texas to the west, and the Gulf of Mexico to the south.
is a state in the southeastern region of the United States.
It is the 31st in size and the 25th most populous of the 50 United States. with political subdivisions termed parishes, which are the local government's equivalent to counties.
The Gulf of Mexico did not exist 250 million years ago when there was but one supercontinent, Pangea.
As Pangea split apart, the Atlantic Ocean and Gulf of Mexico opened.
Much of the state's lands were formed from sediment washed down the Mississippi River, leaving enormous deltas and vast areas of coastal marsh and swamp.
These contain a rich southern biota; typical examples include birds such as ibis and egrets.Louisiana is bordered to the west by Texas; to the north by Arkansas; to the east by the state of Mississippi; and to the south by the Gulf of Mexico.The surface of the state may properly be divided into two parts, the uplands of the north, and the alluvial along the coast.In between the Tertiary rocks of the north, and the relatively new sediments along the coast, is a vast belt known as the Pleistocene Terraces.Their age and distribution can be largely related to the rise and fall of sea levels during past ice ages.In general, the northern terraces have had sufficient time for rivers to cut deep channels, while the newer terraces tend to be much flatter. Their origin can be traced back to the early Gulf of Mexico, when the shallow ocean had high rates of evaporation.