A. (Hope this helps you out)
Fort Sumter is best remembered for the Battle of Fort Sumter, where the first shots of the civil war were fired. Once the Confederate States of America took control of Charleston Harbor, they soon aimed costal guns on the fort, and fired.
He resigned because he'd already had enough trouble as president. Mainly the Watergate scandal. His plan was for him to step down and if he was arrested the vice president which would then be the vice president would pardon him. Also, if he didn't resign he'd likely be impeached anyway.
Answer:
B would be the correct answer.
In the mock-up of an airplane cabin, heated yellow bags were placed where people would normally sit in order to replicate the situation where the plane is full of people. The yellow bags were heated since human body temperature is generally at 37 degrees Celcius. This is to correctly construct an experimental model of the airplane cabin.
It might be four, because all three of them are apart of the axis powers.