How did Spain lose America?

Answer 1

By revolts against the Natives. When Spain lost its land they were attempting to get it back, and many countries in Europe were willing to help them, but the British basically went up to America and said "Guys can you help us stop Spain from harming Latin America?" (because Britain and Spain were big enemies and were considered some of the worlds most powerful nations, and Britain wanted to limit Spain's power, so James Monroe, the President of the US at the time, created the Monroe Doctrine, which stated that Spain needs to leave Latin America alone and that the US and Britain would defend Latin America if they attempted to get their land back.

Answer 2

it introduced Spanish and Christianity to America

Answer 3

By 1850 Spain had lost all of her colonies in America except Cuba and Puerto Rico.