Answer:
Colonization ruptured many ecosystems, bringing in new organisms while eliminating others. The Europeans brought many diseases with them that decimated Native American populations. Colonists and Native Americans alike looked to new plants as possible medicinal resources.
The Immigration and Naturalization Act of 1965, also known as the Hart-Celler Act, abolished an earlier quota system based on national origin and established a new immigration policy based on reuniting immigrant families and attracting skilled labor to the United States.
The powers of the federal government are explained in the constitution
For the first question, among the choices the one that best describes the leadership style of Emperor Shi Huangdi is that he was <span>strict and bureaucratic in terms of implementing his policies.
For the second question, the situation that would most likely cause scarcity is </span><span>a natural disaster which destroyed many farms in a region.
For the third question, the situation that </span>would create a lower demand for Chinese silk by the Romans would be a<span> Chinese silk worker secretly gives silkworm cocoons to the Romans, allowing them to manufacture silk themselves.</span>
