I believe they invented sonar equipment to see enemy u boats from Germany
1851: Congress creates reservations to manage Native peoples. The U.S. Congress passes the Indian Appropriations Act, creating the reservation system. The government forces Native peoples to move to and live on reservations, where it can better subdue them.
Answer:
Coins are as important as the inscription in history. They confirm the information derived from literature. They are of various metals: gold, silver, copper, or alloy and contain legends or simple marks. Those with dates are probably very valuable for the framework of Indian chronology.
I think This is the ans but I am not sure.
(If this isn't right then I am very very sorry)
What are the reasons listed
