I am very confused? Would you mind telling me what it means so I can help
The answer is B.) peninsula
I would say the topic of such a study would be paleomagnetism and perhaps its effect on plate tectonics because when the seafloor spreads at the mid-ocean ridges, magnetized stripes of rock, symmetrical on either side of the trench form and they record changes in the earth's magnetic poles at certain times so can be dated to help show the rate of spreading of the seafloor at these locations.
The reasoning why the US place a blockade on Canada was because , At the time of the American civil war , Canada did not yet exist as a .. because of Canada's location ...