Although events of the war dominated and the First Battle of Bull Run occurred only two weeks after the 37th Congress was called into session, under Grow's leadership, several major acts of Congress were passed and signed into law, particularly the Morrill Land-Grant College Act (passed House June 17, 1862), the Pacific Railway Act authorizing land grants to encourage the construction of the transcontinental railroad, and the Homestead Act, which in over a century resulted in the establishment of 1.6 million homesteads.