The executive branch: main power to deal with foreign powers.
the legislative: makes laws and has the power to ajust taxes and made up of two houses Senate and house of reps.
the judicial: is to interpret the laws and also revoke laws that they find unconstitutional.
The importance of saving money is simple: It allows you to enjoy greater security in your life. If you have cash set aside for emergencies, you have a fallback should something unexpected happen. And, if you have savings set aside for discretionary expenses, you may be able to take risks or try new things.