conduce (v.)

c. 1400, "to lead, conduct" (a sense now obsolete), from Latin conducere "to lead or bring together, contribute, serve," from assimilated form of com "with, together" (see con-) + ducere "to lead" (from PIE root *deuk- "to lead"). Intransitive sense of "aid in or contribute toward a result" is from 1580s.