I think your answer is A: Hidden answer
hope this helps :)
They didn't have the resistance built up to germs that Europeans carried with them so they started massively dying due to this and they needed a huge workforce. That's why they started getting slaves from Africa who could work and get resources for manufacturing.
Read more on Brainly.com -
brainly.com/question/7747554#readmore
Cognitive load theory differentiates cognitive load into three types: intrinsic, extraneous, and germane. ... Cognitive load.
The answer is Thanksgiving and United :)