14.3 Military Before the secession of Texas Mexico comprised almost 1,700,000 sq mi (4,400,000 km2) but by 1849 it was just under 800,000 square miles (2,100,000 km2) Another 30,000 square miles (78,000 km2) were sold to the U.S in the Gadsden Purchase of 1853 so the total reduction of Mexican territory was more than 55% or 900,000 square miles (2,300,000 km2). .
More than 20,000 injured or ill soldiers received treatment in an array of permanent and temporary hospitals in the capital including the U.S Patent Office and for a time the Capitol itself Among the notables who served in nursing were American Red Cross founder Clara Barton and Dorothea Dix who served as superintendent of female nurses in Washington Novelist Louisa May Alcott served at the Union Hospital in Georgetown Poet Walt Whitman served as a hospital volunteer and in 1865 would publish his famous poem "The Wound-Dresser." the United States Sanitary Commission had a significant presence in Washington as did the United States Christian Commission and other relief agencies the Freedman's Hospital was established in 1862 to serve the needs of the growing population of freed slaves. Washington D.C. Business Directory, DS CA (1774) DI (1776) AC (1777) USC (1787) Main Terminal Station of Aerotrain.
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