He "discovered" it during the Colonial periods which would be Colonialism
Internal conflict is a conflict that arises between two different
motivations or ideas in one person, while an external conflict is a
conflict that arises among two or more people.
One difference
between them is that an internal conflict can be solved by one person
alone, while an external conflict needs a cooperation between the
people.
Last sentance is incorrect
I think it's a fragment sentence
hope that helps:)
Believe the answer is B. Hope i helped !