Why does Polybius believe the Rornan constitution worked so well?
A. because it gave all power to a single ruler
B. because different parts of the government
balanced one another
C. because it was a pure democracy
D. because one part of the government had
total power over all other parts

HURRY PLEASE!!!

How did settlers decide where to live ?

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.

Aside from low birthrates and high death rates, what can cause a country’s population to decline