Complex sentence: He was critic for Employment from 1984 to 1990, critic for arms control and disarmament as well as critic for Official Languages from 1990 to 1992, and critic for Immigration from 1992 to 1993.
Split into simpler sentences: He was critic for Employment from 1984 to 1990. Allmand was critic for arms control and disarmament as well as critic for Official Languages from 1990 to 1992, and critic for Immigration from 1992 to 1993.