The Reason Differences in the Growth Stories of North Korea

Multiple Choice

The reason differences in the growth stories of North Korea and South Korea can be viewed approximately as a natural experiment or an experiment of history is that ________.

A) the culture in both countries was changing radically, while geography and institutions remained largely unchanged
B) the geography in both countries was changing radically, while culture and institutions remained largely unchanged
C) institutions in both countries were changing radically, while geography and culture remained largely unchanged
D) institutions, geography, and culture in both countries were changing radically