Some of the people who fled Europe were looking for freedom and political liberty so that they could do more of the things they wanted to do and be able to decide what kind of government they wanted to have.
Other colonists were seeking religious freedom, which is the ability to follow whatever religion they wanted to, or no religion at all. In Europe, many people were persecuted (or treated unfairly) because of their religious beliefs.
其他的殖民者是为了寻找宗教自由，也就是他们可以信仰任何宗教，也可以不信仰宗教 。在欧洲，许多人因为他们的宗教信仰而遭到迫害（或不公平地对待） 。
They thought that by coming to the colonies they would be able to practice their religion (or follow the teachings of a religion) freely, without anyone telling them that they couldn't do it.
Finally, there were colonists who went to the colonies seeking economic opportunity.
In many European countries, there was a class system, which is a way of organizing society so that poor people stay poor and rich people stay rich, and it is difficult or impossible for poor people to become rich.
People were frustrated because they had few or no opportunities to make more money or to live a better and more comfortable life.
In the colonies, however, people who were willing to work hard had far fewer limitations, which meant that they could make their lives better if they wanted to.
So colonists fled Europe and went to the colonies to seek these economic opportunities to improve life for themselves and their families.