Millions were upset at the results of WWI and the effect it had on society. The quick rise of modernity and industrialization was overwhelming to a quickly changing populace and unemployment was on the rise. Generally people wanted something different because it seemed like the world was on going crazy.
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.
The direct cause of WWI was the assassination of Archduke Franz Ferdinand at Sarajevo on 28 June 1914. However historians feel that a number of factors contributed to the rivalry between the Great powers that allowed war on such a wide-scale to break out.
Slave ships were large cargo ships specially converted for the purpose of transporting slaves. ... As many as 20 million Africans were transported by ship. The transportation of slaves from Africa to America was known as the Middle Passage.
I think it's the Industrial Revolution. Let me know if this helped!