Answer and explanation:
Levels in government are key to maintain society more fair and peaceful since it allows the power to be more distributed and just.
The government in the United States consists of three levels: a National Government that rules the Nation under the legal authority of the Constitution, many State Governments that control the different states in the country, and even more Local Governments that are in charge of each and every municipality and county.
Each of these levels is also divided into three branches: the executive branch with the important task of carrying out the laws, the legislative branch that is in charge of making the laws, and the judicial branch, composed by judges that evaluate if laws are being broken or not.
If governments lacked levels and/or branches, the power to rule would reside on very few people, making it possible for them to manipulate the country's goods and people at will.