The correct answer to this open question is the following.
If the question refers to the Westward Expansion from 1807 to 1912, that made thousands of pioneers to cross the Oregon Trail, then some possible consequences of the rapid settlement of Oregon would be the occupation of lands to be used as farms and get people new opportunities to make a decent living growing crops. The rapid settlement was notorious by 1840. Oregon lands "promised" fertile soil. That is why people from the Mississippi Valley decide to move to Oregon. Mane Eastern farmers decided to better move to Oregon instead than New Mexico or California, thinking that the land in Oregon was more fertile to farmland. People had to cross the above mentioned Oregon Trail, knowing that the trip would not be easy.
False. North America was inhabited by many different Native American tribes.
The Ice Age had a great effect on where people settled in americans since they were only able to reach North America through the Bering Land Bridge, which was only frozen due to the extremely low temperatures. Without this they would have had no way to leave Siberia.
Lincoln ran on a political platform opposed to the expansion of slavery in the territories. His election served as the immediate impetus for the outbreak of the Civil War.
The answer is The increased opposition to war.
Nixon was not popular with his foreign policy of war to fight communists. During his term, people held numerous strikes that showed that the people were against its implementation. They don't want numerous soldiers to get involved and suffer. They also don't want people from foreign lands to lose their lives because of this.