Support staff in the office of the president include

The right answer is Administrators. They take part of the Office of Administration which its main role consists in providing the administrative support to the Executive Office of President. It includes financial management, research assistance, human resources, information technology, security, etc. The director of this office manages the yearly budget and related requirements of the organization of the official funding panel.

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893