Answer:
To protect the nation against tyranny by separating the powers of government.
Explanation:
By "limiting" the government , we create a system where the power to run the country does not belong to one single institution. We're separating that power into different branches.
With this separation, one branch of that government can control/interfere the other branch if they're trying to do something unlawful.
For example, if the legislative branch wanted to create a legislation that violate the right of citizens, the judicial branch can intervene and prevent that legislation from being passed.
This limitation will prevent the government from becoming a tyranny.
