music: 50's Chart Toppers: Name The Artist: That Old Black Magic?

Questions

who is the first modern head of government to bear a child while in office?

who first swum the english channel in 1875?

which english statesman was awarded the nobel prize for literature?

what was william the conqueror's survey of england prepared from 1085-85 called?

what is the artificial international language invented in 1887 called?