Which two events took place after the tiananmen square protests in 1989?

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

During the 1920’s why did the us policy change

If the outcome of the civil war has been different, how would that most likely have affected china?