Answer:
All of the above!
Bonus - Hitler took Suiciide between these trials.
Answer:
The US has had the leading economy since it has a controlled economy and it manages its money but the US's economy is going to start going down if they don't stop wasting/spending money.
Answer:
The Metric Act of 1866, enacted on 28 July 1866 , legally recognized the metric system of measurement in the US. It's sometimes referred to as the Kasson Act, after Congressman John A. Kasson of Iowa, who chaired the House Committee on Coinage, Weights, and Measures.
Explanation: