Which was a result of the construction of the transcontinental railroad? hard-working chinese tracklayers were treated with new respect by their supervisors the railroad opened new markets for trade, and spurred the creation of time zones. native americans were eager to use the railroads for travel. tracklayers received a lot of money and health benefits for their efforts.

The railroad opened new markets for trade, and spurred the creation of time zones

Explanation:

The rail road made it easier and cheaper to travel accross the country, this made possible for products that prior to this time were too far away could be transported and sold in other parts of the country, opening new markets, and it made the necessity for time zones, because the country is too wide and needs to have different time zones for different coasts and locations.

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climate change is the big reason to the decline of the indus valley which also caused floods. so i dont know what answer would best fit the description thats just what i found online! have an awesome