In bigelow v. virginia, 1975, the supreme court extended protection to which form of speech

The correct answer is advertising.

In this case, the Virginia government made a state law outlawing any publication or communication that encouraged or prompted a person to receive an abortion. Bigelow created an advertisement simply telling women what hospitals had these services and what other services they offered to patients. In the end, the Supreme Court ruled in favor of Bigelow, as his advertisement was more than about abortions. Rather, it was about women's health services and where they could be receive help.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

here is a link that will you.