The answer is D, the Quartering Act. When British troops were housed in colonial homes, they were being quartered.
Answer: The purpose of the footnote to paragraph 4 is that It provides an additional fact related to the Civil War.
Kepler did multiple things, but his most famous work is demonstrating that the planets move in an elliptical (kind of like an oval) orbit around the sun instead of a circular orbit.
Over speculation means to over "guess." eg, majority of the people feel the stock market will go up, so they greedily buy, when in reality it's the peak already and stock market prices will drop soon.