Suppose you make a telephone call to a friend or relative in Mexico or in France. Suppose you send a letter to China using a stamp from the United States. Learn about international agreements that make it possible for your tele- phone call or letter to reach its destination. Find information about the Universal Postal Union or the International Telecommunications Union.​

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

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