European innovations in cartography, navigation, and ship-building were based on knowledge developed from which regions?

What is the area of the trapezoid shown ?

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.

When benito muslini came into power he promised to