What sparked a new period of colonial expansion for england in the mid-seventeenth century?

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.

Initialy plantations everywhere growing cotton

Which number on the map indicates the farthest reaches of alexander conquests?