The Civil Rights Act (1866) was passed by Congress on 9th April 1866 over the veto of President Andrew Johnson.
Square Miles of United States. The square miles of United States is 3,794,101 sq mi. This is equivalent to 9,826,675 km2. In terms of size comparison, it is slightly larger than the Peopleâs Republic of China. The 2010 estimated population is 310,931,000.
Alaska is the largest state in the union at more than 656,000 square miles. Florida is about one-tenth the size of Alaska. West Virginia ranks 41st among the 50 states in area. Missouri contains nearly 70,000 square miles. The first state, Delaware, is the second-smallest in the country.