For hundreds of years leading up to the arrival of the Mayflower, the Native American tribes prospered.  They adapted to their environment by learning how to hunt, learning how to use various plants as medicine, and by participating in numerous traditions in order to ask for help from their gods.  They were completely dependent upon each other, the land, and the gods that they worshipped.  When the Pilgrims arrived from England in 1620, it was only customary for the Native Americans to show them the land and introduce them to their way of life.  After becoming comfortable with the new land and its inhibitors, the new residents decided to invite even more Europeans to come live in the new land.  Over the course of several decades, so many Europeans had moved in that the land no longer felt like it belonged to the Native Americans.  They tried to co-exist with each other, but numerous problems such as plagues and new technology pushed the Native Americans away until ultimately they were seen as the intruders on European land.