According to o net what are common work styles needed by General and Operations Managers select four options self control

your answer would be (a)

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation:

to protest slavery i would think it would be a

immigrants from northern and western europe continued coming as they had for three centuries, but in decreasing numbers