The construction of the transcontinental railroad involved two companies building toward each other. Which statement correctly describes their routes?

The Union Pacific built east from California, and the Central Pacific built west from Nebraska.

The Union Pacific built west from Omaha, and the Central Pacific built east from California.

The Southern Pacific built north from Texas, and the Northern Pacific built south from Washington.

The Union Pacific and Central Pacific both started in Kansas and built in opposite directions.

The Central Pacific Railroad faced the immense challenge of building through the Sierra Nevada mountains. Which group of immigrants was primarily hired to perform this dangerous labor?

Irish immigrants who had previously worked on canals in the East.

German immigrants seeking land and religious freedom on the frontier.

Chinese immigrants who were recruited to fill a severe labor shortage.

Mexican workers who were experienced with construction in desert climates.

A specially engraved final rail

The first company to finish would gain exclusive rights to the entire line.

The government offered more subsidies in land and loans for every mile of track laid.

The workers on the faster crew were promised large cash bonuses and free passage home.

They were competing to see which immigrant group could work more efficiently.