This shows that they were very clever to make a stone wall. This makes trying to bring down the wall harder most likely make enemy think not to attack them.
Answer: They began to tighten control because they saw the colonies as a source of much-needed money to pay off the debt from the French and Indian War. The British felt that the colonies should pay their part of the cost of the war. They used their power and control to make the colonies pay the taxes.
If its Christopher Columbus, then it was to have relaxed beliefs of religion since Europe's king was punishing people who would not attend church