Woodrow Wilson created the league of nations was an international organisation put together to resolve international problems after WW1. the only problem with it was the U.S. did not want to join on the fear that they would be called in to more war then they wanted.
The European slave trade began with Portugal's exploration of the west coast of Africa in search of a sea trade route to the East. The East had new resources, like spices and silk, and the Portuguese were hoping to acquire these goods without the hard journey by land from Europe to Asia.
The Great Compromise solved the problem of representation because it included both equal representation and proportional representation. The large states got the House which was proportional representation and the small states got the Senate which was equal representation.
It's A, it would only be the first one