When European explorers first arrived in the Americas, they brought new diseases with them. These diseases spread A
to indigenous people, leading to many deaths.
What is this an example of?

Describe the technology advancements that lead to explorers being able to sail great distances. [[ps: doesn't explain where. i am only speculating it's in europe.

Which of the following describes an effect of world war ll on the united states economy a. automobile companies produced a record number of cars b. many factories had to expand to produce military equipment c. the airplane industry suffered as the allies began using airplanes in combat d.cities with shipyards declined because so many ships had been sent overseas.

What is the approximate area of a circle with a radius of 15 feet