BRAINLIEST
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Just as it opened the markets of the west coast and Asia to the east, it brought products of eastern industry to the growing populace beyond the Mississippi. The railroad ensured a production boom, as industry mined the vast resources of the middle and western continent for use in production.“What the transcontinental railroad did was bring the West into the world, and the world into the West,” explains James P. Ronda, a retired University of Tulsa history professor and co-author, with Carlos Arnaldo Schwantes, of The West the Railroads Made. In particular, it helped turn California from a once-isolated place to a major economic and political force, and helped lead to the state’s rapid growth.By 1880, the transcontinental railroad was transporting $50 million worth of freight each year. In addition to transporting western food crops and raw materials to East Coast markets and manufactured goods from East Coast cities to the West Coast, the railroad also facilitated international trade.In the 1860s, a six-month stagecoach trip across the U.S. cost $1,000 (about $20,000 in today’s dollars), according to the University of Houston’s Digital History website. But once the railroad was built, the cost of a coast-to-coast trip became 85 percent less expensive. That made it possible for Americans to visit distant locales that previously they might only have heard about.

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:

the first 10 amendments to the u.s. constitution are known as the bill of rights. those 10 amendments establish the most basic freedoms for americans including the rights to worship how they want, speak how they want, and assembly and peaceably protest their government how they want. the amendments have also been subject to much interpretation since their adoption, particularly the right to carry a gun under the second amendment.

"a bill of rights is what the people are entitled to against every government on earth, general or particular, and what no just government should refuse, or rest on inference," said thomas jefferson, the author of the declaration of independence and the third president of the united states.