What technology, new in the late 19th century, increased the demand for copper worldwide?

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.

Whose on-field leadership is responsible for the success of the united states in the battle of new orleans during the war of 1812?

Principles of cultural identity have been used to justify conflict. true false