Is it ever okay for a country to push its form of government on another country? If so, what circumstances would make it okay? If not, what makes it unethical?

Why would “intimidate soviets at the start of the cold war” complete this diagram

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.

How did the iran-contra affair impact the conflict between the united states and the soviet union? what role did the iran-contra affair play in both iran and nicaragua?