Background of internet service provider?

The ISP provides internet in many ways. Most common method is through telephone lines.Internet connection speed can generally be divided into two categories: dialup and broadband. Dialup connections...

Yes an Internet Service Provider (ISP) is required for you to access the internet.

ISP

According to Wikipedia, the first company to offer dialup service to the general public was "The World" based in Brookline Massachusetts. Still in operation today they began in 1989..

to spread signal An internet service provider gives you the ability to use the internet.