US economic influence in other countries led to -cultural- diffusion.
Before becoming President of the United States, Theodore Roosevelt was the Assistant Secretary of the Navy. He resigned in 1898 to organize the Rough Riders, the first voluntary cavalry in the Spanish-American
Originally, colonialism had caused a great divide between the the colonial slaves and Spanish and Portuguese people. However, owing ti the contact between slaves and owners in these colonoes, the concept of equality between races became easier to grasp for the South Americans. They started viewing the race barriers more open-mindedly. Moreover, cross-mixing caused numerous social classes to be created of mixed race.
