How is a unitary system of government different from a federal system of government? A.
The states in a unitary government are quite powerful, but states in a federal government are fairly weak.
B.
More levels of government exist in a unitary government than in a federal government.
C.
The national government is more powerful in a unitary government than in a federal government.
D.
A unitary government is broken into three branches, but a federal government only has one branch.

Explanation:In a unitary system the only level of government besides the central is the local or municipal government. ... Within a federal system the state or provincial governments share sovereignty with the central government and have final jurisdiction over a broad range of policy areas.

the answer wold be b) travel among nations should be regulated by an international organization

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.