Because there were no supermarkets. When they ran out of food, they had
to go look for more. When they found it, they had no major reason to
go back where they came from, since there were no mortgages, office
buildings, elementary schools, high school football teams, churches, shoe stores, or radio stations.
Early humans did not raise crops or animals for food. They picked fruit, berries, leaves and roots that grew wild near where they lived, and hunted animals for meat. If they picked and hunted faster than food could replenish itself, then the supply ran low, and they simply picked up and went looking for a place that had more.
The basic Islamic belief is that there is no god but Allah and Muhammad is his massanger.
The Mayflower Compact was all about self government. It was the first time the colonists had to make decisions on their own without the Monarch's influence. The United States today doesn't go based on self government because it would be detrimental to the people, anarchy would occur. That is why there's 3 branches of government. The legislative, judicial, and executive branch. Those in these branches must work together to avoid and deal with problems the nation may experience.
The main reason for british colonization of Singapore was to obtain use of its harbor and ports. Singapore was in a very strategic position for certain trade and shipping routes.
