How America became a superpower

America grew from a colony to a superpower in 200 years.
With over 800 military bases around the globe, the US is easily the most powerful nation on earth. But it wasn't always this way. The US once played an insignificant role in global affairs. In this 8-minute video, you can see the transformation.

Troop numbers: "Total Military Personnel and Dependent End Strength By Service, Regional Area, and Country". Defense Manpower Data Center. November 7, 2016.