The agricultural revolution, or the Neolithic Revolution, was when nomadic tribes, found out all about agriculture and started growing crops. The upside and advantage of this was that now, the tribes had a constant supply of food. That means that they didn't have to hunt every single day to look for vegetation or meat. The disadvantage of this was that to grow crops, you had to stay in a certain place for a long time, to tend for your crops and wait until they grow. So they had to stay in one place for a long time. This wasn't exactly ideal back then because other tribes could come and attack you or diseases could easily spread between tribes for being too close for a long time. Hope this answer helps.
