Alexander Graham Bell was an American inventor and teacher of the deaf but he was most famous for his invention such as the telephone. Alexander was born on March 3, 1847 in Edinburgh, Scotland and educated at the university of Edinburgh and London. Alexander immigrated to Canada in 1870 and to United States in 1871. In United States, Bell began teaching deaf-mutes and publicizing the system called the "Visible Speech." The system was basically designed and invented by his father, a Scottish educator Alexander Melville Bell. He showed how lips, tongue and throat are used in the verbalization of sounds. In 1872 Bell had found himself a school to train teachers of the deaf in Boston, Massachusetts. The school later became a part of the Boston University where Bell was appointed to teach off vocal physiology. He then later became a naturalized U.S. citizen in 1882. Since the age of 18, Bell had always...