31) What technology did Stephen Douglas want to expand to Illinois, which led him to write the Kansas-Nebraska Act?

A)
Canal
B)
Railroad
C)
Highway

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity

barack obama

44th president of the united states