  The paper continues the intriguing theme that many key facts of
(single-variable) Real Analysis are not only crucially dependent on the
completeness of the real numbers, but are actually equivalent to it. The list
of these characterizations of completeness is long and contains many prominent
items, but so far the "biggest price", the Fundamental Theorem of Calculus
(FTC), had resisted inclusion in the list. We show that the FTC $can$ be
included, if one considers uniformly differentiable anti-derivatives. In the
process, we exhibit some interesting facts about uniformly differentiable
functions, including an additional characterization of completeness. We also
discuss the second part of the FTC, the "Evaluation Theorem".
