Explain confederal system of government

The confederal form of government is an association of independent states. The central government gets its authority from the independent states. ... The country may be divided into states or other sub-units, but they have no power of their own. Confederalism is a system of organisation in which there is a union of states with each member state retaining some independent control over both internal and external affairs. For international purposes there are separate states rather than just one state. Nations can choose to follow or not follow the lead of the weak central government. Examples: The Commonwealth of Independent States (CIS), formerly known as the Soviet Union. Also, Switzerland's canton system and the Confederate States of America (1861-1865).

Explanation:

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i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.