How did the u. s move from isolation to involvement at the start of the war? explain.

Prior to World War II, certain politicians such as FDR worked to get the US on war footing with programs like Lend Lease.

This enabled the US to move from isolationist to kind of involved, providing weapons to their future allies.

By the time Japan attacked Pearl Harbor, the US was ready to go to war.

the navigation act prevented the colonies from exporting to countries other than britain and it prevented the importation of goods by other countries as well. so i believe the correct answer is d. other nations could not deliver goods to the colonies.

hope this .

this is a good question! i'll do some research and come back when i have the answer!