It caused the civil war. The industrial revolution in the North, during the first few decades of the 19th century, brought about a machine age economy that relied on wage laborers, not slaves.
The best option would be "<span>C. President, executive departments, individual federal agencies," since the Executive Branch of the US government is headed by the President and run by his cabinet, along with other agencies. </span>
N the history of Europe, the Middle Ages<span> or medieval period lasted from the 5th to the 15th century. It began with the fall of the Western Roman Empire and merged into the Renaissance and the </span>Age<span> of Discovery. So C Would be the correct answer.</span>