When was the 4×100 meter relay race first included in the Olympics?

When was the 4×100 meter relay race first included in the Olympics?

اولمپکس میں پہلے 4 × 100 میٹر ریلے ریس کو کب شامل کیا گیا تھا؟
Explanation

The 4×100 meter relay was first introduced at the 1912 Stockholm (Sweden) Olympics for men.

It became a standard Olympic track event from that year onward.