becoming a us citizen?

Answer 1

Be able to immigrate first to the US and work for a long period of time. Afterwhich, you can now apply for a US citizenship.

Answer 2

if you are not born in the USA, not have family that already are US citizen? you may be naturalized, here is how:
Eligibility for naturalization
To become a naturalized United States citizen, one must be at least eighteen years of age at the time of filing, a legal permanent resident of the United States, and have had a status of a legal permanent resident in the United States for five years less 90 days before they apply (this requirement is reduced to three years less 90 days if they (a) acquired legal permanent resident status (b) have been married to and living with a citizen for the past three years and (c) the spouse has been a US citizen for at least three years prior to the appicant applying for naturalization.) They must have been physically present for at least 30 months of 60 months prior to the date of filing their application. Also during those 60 months if the legal permanent resident was outside of the U.S. for a continuous period of 6 months or more they are disqualified from naturalizing (certain exceptions apply for those continuous periods of six months to 1 year). They must be a "person of good moral character", and must pass a test on United States history and government.
go read the rest at this page if you wish?
http://en.wikipedia.org/wiki/United_States_citizenship#Possession_of_citizenship

Answer 3

Go to www.travel.state.gov/visa you can get all the information you need there to become a citizen of the U.S. Good Luck.

Answer 4

I did so by being born here.