Answer:
For new opportunities after the American Civil war
Explanation:
Carpet baggers are described historically as "opportunistic Northerners who came to the Southern states after the American Civil War, who were perceived to be exploiting the local populace for their own financial, political, and/or social gain." (-Wikipedia definition) This was used by Southern locals as a derogatory term who believed the carpetbaggers to be greedy and exploitative.
The migrants gathered to begin their journey westward on the Oregon Trail in Independence, Missouri.
The Oregon Trail was a major route that people used to take when they wanted to move to the western area of the US. It started in Independence, Missouri and finished in Oregon City, Oregon. Many people traveled in wagon trains which went through six states such as Missouri, Kansas, Nebraska, Wyoming, Idaho and lastly Oregon.
This statement is typical of someone who is an opponent of capitalism and imperialism, would mean for someone who is a communist, socialist, utopian, or anarchist. With this statement, Mao Zedong would agree, because he was the leader of the Communist Party in China, while the others options are offered, all of them are Americans, were hardly ever to agree with this statement, which is completely opposite from the value of capitalism and democracy.