Can the electoral college overturned the popular vote

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.

The communists triumphed over forces because of a well-disciplined fighting force, a single - minded sense of zeal , and strong convictions.

Why did the outbreak of world war 2 create a need for new military bases across the country?