The Declaration of Independence
The United States was able to pay for the construction of the Panama Canal by negotiating and financing land treaties with the governments of Panama and Columbia. The treaty came to be known as Mallarino- Bidlack treaty. This was a very important treaty for the Americans as they got the control of the Panama Canal.
Its most likely Production, factories “used” to be the American labor back then.
War of 1812, the Civil War happened and people died.