In Puerto Rico it was useful, in Cuba not so much. Cubans perceived the outcome as occupation and didn't want to have United States occupation in their country. Puerto-Ricans had a form of a civilian government with independence and Puerto-rican citizenship but the country belonged to US.
They cannot, eventually the citizens will find out
Most scholars believe Hinduism started somewhere between 2300 B.C. and 1500 B.C. in the Indus Valley, near modern-day
The Romans Government became more democratic by the revolt of the plebeians. The patrician's strangle hold on power was broken and the plebeians gained rights.
Hope this helps :D