Answer: True
Explanation: After the Mexican war, Mexicans who wanted to work the land were given parcels of land and promised citizenship. However, as white Americans pushed west, they squatted on lands owned by Mexican Americans and forced the latter out. Anti Mexican sentiments rose and new laws were passed to limit Mexican gatherings.
Similarly, Chinese immigrants migrated to the U.S. at the height of the gold rush but were prevented from participating in the search for gold due to complicate land laws. They had to take menial jobs on the new rail construction project to survive. Even here, they faced discrimination and were given the worst and most dangerous jobs.
Eventually, both groups withdrew into homogenous communities in which their language and culture could survive.