Answer:
Revolution
Explanation:
the usually violent attempt by many people to end the rule of one government and start a new one
The term for the idea that certain behaviors are more likely to reflect activity in one hemisphere than in the other is "lateralization", since these actions are "lateral" to one another.
They may have things that happen similar just different time parts
I'd say C because the other three wouldn't lead to it being the leading occupation, if anything, it would make it harder to conditions other than C
This is true also because the land bridge left america open for discovery and when they found many plants and many animals they stayed and did not return to asia