Evolution

I'm gunna have to say that out of the stages i was taught in class, homo egaster was the most important stage in evolution yet. This is the stage where our ancestors brains started becoming close to what we have today. Not only that, but they started having connections to others of their own kind and started building relationships. No other animal could do that before them. Also, having their big brains led them to start leaving their ancesteral grounds and moving other places. This was very important to their survival and we wouldn't be here today if they didn't.