Answer:
I think it is c bc it is not an example of a biotic factor
First, we were fighting a battle on land that we knew better than the British.
Second, we had surprise attacks which George Washington lead.
Third, the British took this war as a joke and did not take it seriously.
The correct answer is C. By forming trade blocs
Explanation
A trade bloc is an agreement between different nation through which certain barriers such as tariffs are eliminated or reduced, which implies trade between the countries or nations that are part of the block is cheaper, this benefits the economy of the countries participating as the economy grows. Also, trade blocks imply cooperation of nations as they reduced or eliminate barrier and support each other economy as all of them have trade benefits, because of this trade block imply nations cooperate economically.
I’m pretty sure it’s D I’m not super good this but I tried