INCEPTION

Noun

the establishment or starting point of an institution or an activity

"she has been on the board since its inception two years ago"

establishment, institution, foundation, founding, formation, initiation, setting up, origination, constitution, inauguration, opening; 
beginning, start, starting point, outset; 
birth, dawn, genesis, origin, rise;
debut, day one, informal kick off, formal commencement

"the inception of the EEC* in 1958"

EEC- European Economic Community