The answer for this question would be:
Pro tempore of the Senate
<span>A pro tempore is a “placeholder” who acts as a locum in the absence of the superior. The senator with the continuous service to the government is usually chosen by the main senate. </span>
a) the fertile soil led to food surpluses, which supported a larger group of people
The correct answer is D. along the Mississippi River. It is important to note that it lies on the west of the Mississippi River tallgrass prairie states and east of the Rocky Mountains in both the United States and Canada. This area is massive and most of it is covered is what is mentioned above, in prairie, steppe and grassland. It runs from Canada, all the way through a part of the United States and just stops on the border of Mexico. The Canadian provinces it goes through are: Alberta, Manitoba and Saskatchewan. In the United States, it runs through Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas and Wyoming. The central plains do not encompass all these states, but rather has some parts in these states.
Well, it all started after the 7 years war (the french and indian war) the British gov was unsure about what to do with the newly acquired Northwest territory in the Ohio river valley. So they told the colonists that they shouldn't cross the Appalachian mountains. this is known as the proclamation of 1763, this upset the colonists, so to support the massive British army and to pay debts mounted in the 7 years war they began taxing the colonists first with the stamp act then the the quartering act, forcing colonists to give up their beds for British soldiers, eventually a tax on tea was enforced leading to the Boston tea party. The British responded with the intolerable acts, effective sealing off Boston harbor this really upset the colonists especially in the port city of Boston. One thing led to another, Lexington and Concord, and the Declaration of Independence.