<Li> 1887: Congress creates the Interstate Commerce Commission (ICC) to regulate railroads and ensure fair prices . </Li> <Li> 1891: Webb C. Ball establishes first Railway Watch official guidelines for Railroad chronometers . </Li> <Li> 1893: Railroad Safety Appliance Act requires air brakes and automatic couplers on all trains, which greatly reduces railroad worker injuries and deaths . </Li> <Li> 1896: Supreme Court rules in United States v. Gettysburg Electric Ry. Co. that the Takings Clause under eminent domain could be applied for historic preservation . </Li>

When were the railroads built in the us