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.
The only genuinely true item I see is: The Pilgrims elected a governor prior to settling on the new land.
Matthew Cradock was elected as the governor of the Massachusetts Bay Company before any group even set sail to the New World. Then John Endecott became the one sent to go with the settlers to be first governor of the colony itself.
As for the other answers, the first winters were harsh and took a toll on the Pilgrim population.
The Massachusetts Bay Colony eventually became part of the Plymouth Colony (the opposite of how things were stated above).
The Pilgrims did not disband. The most famous of Massachusetts Bay Colony governors was the 3rd governor, John Winthrop. And Squanto was helpful to them.
All of the above, we really ramped up all production for our military.
So that they can establish a government and all form a