Lands and territories of many Indian nations were divided by the French and British when new territorial lines were drawn. Many peoples were no longer allowed to travel freely between them.
Many nations were moved onto reserves and no longer allowed to hunt on their traditional lands or move between their seasonal camps. Many were not allowed to leave their reserve without permission from the assigned Indian agent.
There are many other ways that mobility was restricted but it varies between each nation and the crown, and the treaties that had been negotiated.