Besides connecting the eastern united states with the western united states, the transcontinental railroad was also instrumental in

B: bringing in immigrants from Ireland and China.

Explanation:

Besides connecting the eastern United States with the western United States, the Transcontinental Railroad was also instrumental in bringing in immigrants from Ireland and China. No, the trains did not transport them from Europe and Africa, but the lure of jobs created during the construction of the railroad DID cause an influx of immigrants.

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.