Federal
A government that divides power between the states and the national government
federal
The U.S. Constitution specifies what the national government is allowed to do, and it states that any powers not granted to the national government therein are reserved to the states or the people.
Because the states preexisted the national government and did not want to give up their powers.
federalism
federalism
between the national government and the states
It is a necessary and proper clause
Under the Articles of Confederation Congress depended on donations from the states to operate which caused problems for the national government.
Many. Between the signing of the Articles of Confederation and the ratification of the Constitution of the United States, problems of taxation, land management, currency regulation, and social projects riddled the government. Unfortunately, the question itself is flawed due to the fact that the national government did not exist in the sense that we think of a national government today. The most powerful levels of government were at the state level, with the national level being more a collective attempt by the states to coordinate policy. The largest issue they ran into during this period was the fact that all policies at this level had to be unanimous. But, as stated, the problems faced by the early post-revolutionary government were numerous.
The national government is obligated to support the state governments in case of an emergency in that state. The national government also should no infringe on state powers.It divides power between a National Government and State governments. The obligation of the National Government to protect the States against invasion.