There is so many reasons but they are complicated to explain
The geographic feature that most directly influenced the development of Greek city-states was 2. its mountainous terrain. Greece is a series of island separated by sea and marked with numerous mountains. These mountains kept the region from ever becoming completely unified in ancient times because of the difficulty it took to get from point A to point B. Instead, these mountains resulted in the formation of city-states, smaller political units centered around a single city but sharing a culture similar to other city-states in the area. They were connected by culture rather than politics.
The correct answer to fill in the blank is the Calvinist(Huguenots)
hope this help and is what your looking for.
A is the fist answer not sure about the second