  We study the magnetic properties of the Kagome antiferromagnet going from the
classical limit to the deep quantum regime of spin 1/2 systems. In all the
cases there are special values for the magnetization, 1/3 in particular, in
which a singular behavior is observed to occur in both the classical and
quantum cases. We show clear evidence for a magnetization plateau for the spin
1/2 case in a wide range of XXZ anisotropies and for the occurrence of quantum
order by disorder effects.
