Advancements in technology led to what new theater of battle?
a: the air, with dogfights between planes
b: bayonet attacks in trench warfare
c: sea battles between ships
d: gun fights between trenches

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.

Which is true about pontiacs war in 1763

56: 58 the assembly line was a system through which items were mass-produced in a flow.