Answers revealed in the comments.
GAME 1
Following a revolution in the 1830s, Belgium gained its independence from what country?
GAME 2
On three occasions during the 20th century, there were periods of time in which the sitting U.S. president was also the only living U.S. president. (All previous presidents had passed away)
Name one of those three 20th century presidents.
Name one of those three 20th century presidents.
hebspeaks 
Game one answer:
The Netherlands
GAME 2 answer:
Theodore Roosevelt
Herbert Hoover
Richard Nixon