The electric trolley is a key component of a blank System. 1.infrastructure
2.sanitation
3.representative
4.mass transit
Or other

Why did john browns raid impact the national issue of slavery?

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

Under the new imperialism europe did not need large numbers of people to control territories because of