The Ming Dynasty built large sailing vessels called junks to sail the Pacific and Indian Oceans. These ships were much larger than anything built by the Europeans. Why did Emperor Zhu Di build such large ships, and so many of them?

Which of these was not a key difference between northern and southern states at the constitutional convention? wanting to protect states’ interests vs. a government with strict rules having more, larger cities vs. having fewer, smaller cities wanting to protect agriculture vs. protect industries having many enslaved people vs. using less enslaved labor

Which situation is an example of a citizen participating in a politicial process

If a swimmer is traveling at a constant speed of 0.85 m/s, how long would it take to swim the length of a 50m olympic sized pool?