who invented telephone in 1876

The telephone was invented by Alexander Graham Bell, who was granted the first U.S. patent for the invention on March 7, 1876. Bell's invention was the first practical telephone, and he successfully demonstrated the device by making an intelligible telephone call on March 10, 1876, famously saying to his assistant, "Mr. Watson, come here, I want to see you." While other inventors like Antonio Meucci, Johann Reis, and Elisha Gray also contributed to the development of the telephone, Bell is credited as the primary inventor because of his patent and the subsequent development of a working device that revolutionized communication.