Remove grammar mistakes: After telephone was invented in the late 1800s, people were thinking about ways to improve such communication technology to extend the range of social network.
The telephone was invented in the late 1800s, and it was used to communicate with people in the past.
Correct: The telephone was invented in the late 1800s, and it was used to communicate with people in the past.
Correct: The telephone was invented in the late 1800s, and it was used to communicate with people in the past.
Correct: The telephone was invented in the late 1800s
The telephone was invented in the late 1800s, and it was invented to extend the range of social network.
Correct: The telephone was invented in the late 1800s, and it was invented to extend the range of social network.
Correct: The telephone was invented in the late 1800s, and it was invented to extend the range of social network.
Correct: The telephone was invented in the late 1800s