Answer:
All of the above
Explanation:
The Manhattan Project was a collaboration effort made by allied forces to develop a nuclear bomb. When they were finally successful, they used the bombs on Hiroshima and Nagasaki which caused Japan to surrender.
Automation is when things move or do things by themselves. a engine that runs by itself.
It would be because the homestead act
It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders.
