Although you can use your checking account as a reserve account for your cash, much like a savings account, it may not be the best option for that purpose. Most checking accounts do not earn interest, and even those that do typically earn less than a savings account at the same financial institution.
As is the case with other forms of government in American political theory, local governments derive their power from the people; in practice, local governments receive their authorization from their respective states.
Quick Answer. A centralized government is one in which a small group or executive at the highest level of government holds all political authority, and all other political units are subject to it. Autocracies and totalitarian governments are centralized.