Which drew the horizontal line of slavery across the west along the 36 30’ parallel, the Kansas Nebraska act

The Missouri Compromise of 1820

Explanation: The Act repealed the Missouri Compromise of 1820, which drew the horizontal line of slavery across the West along the 36° 30' parallel, as both Kansas and Nebraska were north of this line. This reopened the question of slavery's western expansion.

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.

not sure might be he acquired the entire oregon territory from great britain