... telephone . In 187 6 he introduced the telephone and by 187 7 the first telephone was in commercial use. 15 A.What B.Where C. How D. Who7. Who is waiting you.A.at B. with C.for D.of 8. We live Tran ... March 3, 184 7. He later emigrated first to Canada and to the USA in 187 0s. Belland his assistant, Thomas Watson, conducted many experiments and finally came up with the first telephone in 187 6. Traveling ... March 3, 184 7. He later emigrated first to Canada and to the USA in 187 0s. Bell and his assistant, Thomas Watson, conducted many experiments and finally came up with the first telephone in 187 6. Traveling...