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 US by far. It is 663,000 square miles, compared to the second largest Texas at 269,000 square miles. The largest state in the union by area is Alaska, but it ranks 47th by population among US states. The five largest states in the US are Alaska, Texas, California, Montana, and New Mexico.