The correct answer for 1 is C. Ohio
Ohio never had slavery because it was created according to the Northwest Ordinance as a state that is slave free. The other three had slaves and Texas even had them during the war since they didn't participate in it and they found a loophole in the Emancipation proclamation to keep having slaves.
The correct answer for 2 is a. Kentucky
Kentucky never seceded and joined the Confederacy but they wanted to and were even given confederate congress seats. However, the war ended and they remained a part of the Union just like they were before and during the war.
The correct answer for 3 is
<span>b.slave states in the Union
These were states like Kentucky which were found at the border with the confederacy. They had slaves but had not seceded and did not join the Confederacy. When West Virginia broke from Virginia it became a border state too.</span>
You didn't list options, but I'll suggest an item which famously occurred during Warren G. Harding's presidency:
<h2>The Teapot Dome Scandal</h2>
This was a scandal in which one of President Harding's cabinet members illegally leased oil reserves. President Harding was not directly implicated in the scandal, but was affected by it. After President Harding transferred supervision of the naval oil-reserve lands from the navy to the Department of the Interior in 1921, Secretary of the Interior Albert Bacon Fall secretly gave Harry Sinclair of the Mammoth Oil Company exclusive rights to the Teapot Dome reserves in Wyoming. He granted a similar deal to another oil company executive. The secret leases came under Congressional investigation. Congress directed President Harding to cancel the leases, and the Supreme Court ruled that Harding's transfer of authority to Interior Secretary Fall had been illegal. The whole affair took a toll on President Harding's health. He died in office in 1923.
It is like Nixon said, "no event in American history is more misunderstood than the Vietnam War." I can't give a clear answer but I do have some food for thought which may paint a big picture.
1. You have to keep in mind that Vietnam was not about who killed more troops.
If the winner of the Vietnam war was declared by who killed more troops than the U.S. would win hands down. The U.S. casualties were roughly half a million, where as the Vietcong suffered a little more than a million. Then how did we lose?
2. Keep in mind that at this time technology has improved and Vietnam is the first war where people are watching it go on right at home on there television screen.
They are seeing their sons being shot and viewing dead soldiers every single day.
You did not see this in WW1 or WW2 or the Korena War.