Legal Definition of vested. 1  1 : fully and absolutely established as a right, benefit, or privilege : not dependent on any contingency or condition; specifically : not subject to forfeiture if employment terminates before retirement vested pension benefits. 2  2 : having a vested interest a vested employee a vested beneficiary.
Thomas Jefferson was the President when the Louisiana Purchase  transaction was negotiated. The people who actually signed the  Purchase Treaty were James Monroe, Robert Liv â¦ ingston, and Barbe  Marbois.
(CNSNews.com) - A yearlong celebration of the 200th anniversary of America's Louisiana Purchase began Thursday with historians reflecting on the momentous deal in which Thomas Jefferson bought roughly 800,000 square miles from France's Napoleon Bonaparte for $15 million-less than three cents an acre.