The primary cause of death among Native Americans during the colonial era was -
а
New World diseases
b
Old World diseases
с
enslavement
d
battles with white settlers

Option A

Explanation:

During the colonial era where Europeans started settling and colonizing all over the country brought many germs with them that they were immune too. Because of that fact "New world diseases" or option A such as: chicken pox, the flu, and malaria sweeping through the country at a alarming rate killing at least 90% of Native Americans in the country.

Hope this helps.

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.