What are interchangeable parts? Who was responsible for these? How does this change society

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.

c. pro-democracy demonstrations.