initiate

bring into being

He initiated a new program

take the lead or initiative in; participate in the development of

This South African surgeon pioneered heart transplants

accept people into an exclusive society or group, usually with some rite

African men are initiated when they reach puberty

bring up a topic for discussion

set in motion, start an event or prepare the way for

Hitler's attack on Poland led up to World War II

someone new to a field or activity