mandate (n.) Look up mandate at Dictionary.com
c.1500, from L. mandatum "commission, order," noun use of neut. pp. of mandare "to order, commit to one's charge," lit. "to give into one's hand," probably from manus "hand" (see manual) + dare "to give" (see date (1)). Political sense of "approval of policy supposedly conferred by voters to winners of an election" is from 1796. Related: Mandated.
mandate (v.) Look up mandate at Dictionary.com
"to delegate authority, permit to act on behalf of a group," 1958, from mandate (n.). Used earlier in the context of the League of Nations, "to authorize a power to control a certain territory for some purpose" (1919).