GENERAL KNOWLEDGE

Detailed explanation-1: -In 1870 Bell and his family emigrated to Canada. A year later Bell moved to the United States, where he taught speech to deaf students. While in the U.S. Bell invented and/or improved a number of electrical technologies. He is best remembered as the inventor of the telephone (1876).

Detailed explanation-2: -The invention of the telephone provided an important device for facilitating human communication. No longer did people need to be co-located beside each other to be able to converse. Through the use of the telephone, people could have equally meaningful conversations at a distance, all the while preserving reciprocity.