SSAT Middle Level Reading Quiz
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MAIN IDEA AND SUMMARY
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In the 1800s, sending a message over long distances could take days or even weeks. Letters traveled by horse, ship, or train, and storms or rough roads often caused delays. As countries expanded and businesses grew, people needed faster communication. This need helped inspire the development of the telegraph, a system that could send signals through wires.
Samuel Morse and other inventors worked to make the telegraph practical. They created a code of dots and dashes that represented letters, allowing operators to transmit words as electrical pulses. Telegraph lines soon stretched across cities and then across regions. Messages that once took a week could arrive in minutes, changing how newspapers reported events and how companies made decisions.
The telegraph also affected ordinary life. Families could learn about emergencies more quickly, and governments could coordinate responses to disasters. However, the system required trained operators and expensive equipment, so not everyone had equal access at first. Over time, as networks grew, communication became more reliable and more widely available.
Although newer technologies eventually replaced the telegraph, its impact lasted. It introduced the idea that information could travel faster than people. That shift reshaped business, journalism, and government, and it prepared society for later inventions like the telephone and the internet.
What is the main idea of the passage?
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