Grover Cleveland was the one.
None. President Obama was too young to serve in any previous major wars.
none
None. the senate is a body of legislators, known as senators. they serve with no term limits.
cleavland
None. He was president at the time.
None, since this has nothing to do with the U.S. Constitution.
None have served exactly 10 years.
none. a presidents term lasts 4 years.
At the time of his presidency the 22nd Amendment (the two term limit) had not yet been established. Presidents were not limited at that time to just two terms in office it had just become customary because of George Washington. The 22nd amendment was ratified in 1947.
There has never been a president who has served a 16 year term. Presidents can only serve for 4 or 8 years. Franklin Roosevelt was the longest serving U.S. President at slightly over 12 years. The 22nd amendment, limiting presidential terms, was passed following his presidency, and most likely in direct response to it. It is possible for a president to serve as long 10 years even with the 22nd Amendment if he was serving as vice president and takes over for a predecessor who dies or is removed from office during the final two years of that term.
George H. W. Bush had sons who were grown men by the time he was President . None of the presidents after him had any sons. John Kennedy was the last to have a young son in the White House.