What was the impact of the westward expansion of settlers in the USA?
The westward expansion of settlers in the USA led to a complete annihilation of American Indians who were pushed westwards, down the Mississippi river, and then further west beyond that. They fought back, but were defeated; their villages were burnt and cattle destroyed. Also, with the cultivation of land for agricultural purposes, all grass and trees were razed. This led to terrible dust storms and blizzards in the 1930s, causing much death and destruction.