Bonds issued by political subdivisions of the u. s. government but not guaranteed by the government are called:

U.S. Treasury and municipal bonds are those which are guaranteed as opposed to the agency bonds which are issued by a government agency. Some examples of such agencies are like Fannie Mae, Freddie Mac, Sallie Mae and the Federal Home Loan Banks.

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

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