  We construct an embedding of a free Burnside group $B(m,n)$ of odd $n >
2^{48}$ and rank $m >1$ in a finitely presented group with some special
properties. The main application of this embedding is an easy construction of
finitely presented non-amenable groups without noncyclic free subgroups (which
provides a finitely presented counterexample to the von Neumann problem on
amenable groups). As another application, we construct weakly finitely
presented groups of odd exponent $n \gg 1$ which are not locally finite.
