Why did the new sicknesses brought by Europeans cause so many deaths among Native Americans?

They did not have enough food to stay healthy.

Their bodies had no way to fight the new diseases.

The sicknesses only affected people in certain areas.

They refused to use European medicine.

What was a major effect of the new diseases on Native American communities?

They traded more with each other.

They moved into European settlements.

Their communities became much weaker.

They started building larger homes.

New languages that were hard to learn.

Deadly diseases that caused many people to die and weakened their communities.