Which statement best describes most european countries immediatey after world war 11

What is the meaning of the statement that all is vanity or meaningless? use full sentences

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.

Describe the first sit-in and its impact on the civil rights movement.