Answer:
Jefferson Davis, a former U.S. Senator and Secretary of War, was elected President of the Confederate States of America by the members of the Confederate constitutional convention. After four bloody years of conflict, the United States defeated the Confederate States.
Explanation:
A benefit of a confederate government is C. Several states can cooperate in matters of common concern and still retain their separate identities.
A confederate government derives its power from the state or provincial government resulting to a weak central authority. States under the confederation retain all the powers of an independent nation; powers such as the right to have its own military force, the right to print money, and the right to make treaties with other national powers without needing the approval of other states under the confederation.
Confederate states exerting their own powers weakened the central government which led to the founding fathers to shift into Federalism when they drafted the Constitution.
3D printing uses computer-aided design (CAD) to create three-dimensional objects through a layering method. Sometimes referred to as additive manufacturing, 3D printing involves layering materials, like plastics, composites or bio-materials to create objects that range in shape, size, rigidity and color.
In economics there are four different types of market structures. They are as followed:
1) Perfect competition- This allows for businesses to compete against each other for consumers.
2) Monopoly- This is when one business or corporation corners a market. This occurs when a business is the only supplier of a good/service.
3) Oligopoly- This is when a small amount of businesses control a market/product.
4) Imperfect competition
In your question then, the correct answers are : Monopoly, perfect competition, and oligopoly.