4. What are the different administrative units under federal system?​

The United States is composed of states, possessions, territories, and a federal district, each with varying numbers of subdivisions. The principal administrative division of a country might be called the “first-level (or first-order) administrative division “ or “first administrative level.”

Explanation:

answer; ///( no)   they would be tried separate,criminal cases would be tried first, then the civil case;

the correct answer is a