Answer:
They're afraid that the government will turn into tyranny if they did not limit them properly
Step-by-step explanation:
The constitution contained a list of power that is given to the government in order to manage the country and protected the right of its citizens. The framers realized that they need to carefully list the power along with limitations that might prevent the government from abusing the power.
To deal with this , they created check and balances.
They separated the government into three branches : the legislative branch that can create laws, the executive branch that can carried out the laws, and the judicial branch that can interpret the laws. They give each branch with the ability to limit the power of other branch so they can make prevent in case one branch want to abuse its power.