To make it more reasonable is the answer to this question
Answer:
the Native Americans attack's and injury and disease
Explanation:
those were the obstacles they experienced.
They kept wages low and labor unions from being successful.
Answer: It's false
Explanation: They still was able to trade.
Answer: Gold rush
Explanation: in 1848 james w. Marshall found gold at sutters mill in coloma, California The news of gold brought approx 300,000 people to California(aka Western frontier) from The rest of the United States and abroad. Including immigrants
