Answer:
This act authorized the building of highways throughout the nation, which would be the biggest public works project in the nation's history. Popularly known as the National Interstate and Defense Highways Act of 1956, the Federal-Aid Highway Act of 1956 established an interstate highway system in the United States.F
Explanation:
It led to the entrance of the US into WW1
D nine states had to agree to pass mesuares in congress and they had hardly ever agreed on anything
April 25, 1846 cause Mexican Calvary attached a group of U.S. soldiers.