1850Congress passes the Fugitive Slave Act, part of the 1850 Compromise between pro- and anti-slavery factions in Washington, D.C. The law required officials and citizens, even in states where slavery was illegal, to return escaped slaves to their masters.1947The National Security Act takes effect, renaming the Department of War as the Department of the Army and merging it with the Department of the Navy to form the National Military Establishment, headed by a secretary of defense. The law also created the Department of …