What opinion did the United States government have towards Native Americans during the Manifest Destiny era?

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.

Which statement best explains how the invention of corporations contributed to the economy in the 1800's

Which of these constitutional amendments made all people born or naturalized in the united states into citizens of the united states ?