I'm pretty sure the answer is B, isolationism.
Justinian I served as emperor of the Byzantine Empire from 527 to 565. Justinian is best remembered for his work as a legislator and codifier. During his reign, Justinian reorganized the government of the Byzantine Empire and enacted several reforms to increase accountability and reduce corruption.
The Triangle Shirtwaist played an important role in bringing about labor reforms in the United States.
<span>Better transportation, War Modern technology, Embargo Act of 1807, Assembly</span>