I always played as the Spanish (who gain twice the gold from slaughtering a native village) because in order to fit 50 colonies on the map of the US you had to

I always played as the Spanish (who gain twice the gold from slaughtering a native village) because in order to fit 50 colonies on the map of the US you had to take up all of the land, and most of it was already occupied by native villages. It was impossible to defend most of the inner villages so the only available option was removal, hence picking the Spanish to gain double gold since I was clearing the land anyway. I never was able to get all 50 cities built in time and still try from time to time.