What was the impact of the Indian sailors introducing knowledge of sugar along various trade routes they traveled?

The decision to annex hawaii was a controversial one

Why are nation-states difficult to create?

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated