I think its a) one event happened only as a result of the other
Answer:
Option B. In Humid subtropical Native Americans lived
Explanation:
Subtropical Humid climate is found along the Atlantic coast and it extends up to the Gulf of Mexico.
The summers are too penetrating and sultry and the winters are too cold or mild in regions of Subtropical Humid climate. The day light is immense in summers whereas the winters are too cold in which the temperature may reach up to a single digit and sometimes lower than the freezing point.
Such a climate is found mostly in coastal regions of south east America. In such region the level of precipitation or humidity in the climate is high.
as Russian was complicated state it was obligated to start changing in order to advance
