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.
