The author of this article believes that the Native American population declined greatly mostly because of A.
enslavement, mistreatment, and hard labor.
B.
violent conflict.
C.
lack of immunity to some diseases.
D.
unhealthy patterns of behavior.

Help me plss

lack of immunity of some disease

Explanation:

I just took it

the answer is a. since they were a huge producer of cotton and wanted the most money for it.

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.