Answer:I
If you mean by 21st century then, having awesome medical people
Explanation:
A lot of contries don't have a lot of medical staff, but the US has hired very good medical staff.
Washington called his strategy 'war of posts'.
When he went to Milan, the Duke Sforza appointed him to be a military engineer where he had to design weapons and technological advancements that would help the duke gain warfare supremacy against enemies. He also built buildings and defenses, not just offensive weapons.
Answer: idk imgot pionts :D
Explanation: