<span>(2) encomienda.
Spaniards confiscated land from indigenous people, and rewarded it to spanish citizens, who established plantations, where locals would work using Spanish agricultural techniques, learn Spanish and be converted to Christianity.</span>
If you're asking true or false, the answer is false.
I think you know the answer, but it is 4.
1) water pollution
2) soil and water
3) watershed and the researchers know that the water pollution came from by 1- untreated smoke from factories
2- carbon dioxide emissions