Answer: C
Explanation: Popular sovereignty is when a government is created and sustained by the consent of the people. Basically, decisions that the government makes, are decided by popular vote of the people.
The 4th of July marks the day of our independence from the British.
Unrestricted submarine warfare
By 1939, the New Deal had run its course. In the short term, New Deal programs helped improve the lives of people suffering from the events of the depression. In the long run, New Deal programs set a precedent for the federal government to play a key role in the economic and social affairs of the nation.
Because they helped them with alot like moving heavy stuff from far distances and it made their job easier hope this helped you