The exchange that most affected the indigenous people was the one of diseases. Native Americans hadn't encounter the diseases the European brought before, so they hadn't develop immunity to them. This is the major reason of the large death of Native Americans, besides the war between them and the brutality of the Europeans.
Seven months is the answer
Answer:
Explanation:because of chemical
After Stalin died in 1953, the number of people sent to the gulag "<span>c. decreased dramatically," since Stalin was a primary proponent of sending political dissenters, any anyone he felt threatened by to the Gulag as punishment. </span>
Anasazi
They built their dwellings around mounds in order to make it easier to see the enemy coming from any direction. Such constructions also aimed to slow down an enemy attack by making it hard to attack given that they had to march uphill.