What are Alexander Graham Bell achievements and what was his impact on history?

Alexander Graham Bell's greatest accomplishments were the invention of the telephone (1876) and the refinement of the phonograph (1886). Bell revolutionized communication as we know it and paved the way for more inventors to improve communication as we know it now.

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should congress have the power to interpret the constitution? write a paragraph in which you argue for or against the wide application of the limplied power

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.