Why does the population of foreigners outnumber citizens in some countries on the arabian peninsula?

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.

Martin luther started the protestant movement when he split from the church in 1517. what area of europe was he from?   a.  england  b.  italy  c.  yugoslavia  d.  germany

Why did reagan have the united stars invade grenada