What was the main failure of the articles of confederation that eventually led to the us constitution?

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

How was slavery in mesoamerica, africa, and the arab world similar? many enslaved people were forced to pledge loyalty to their owners. many enslaved people worked in exchange for protection from foreigners. many enslaved people were captured during war. many enslaved people taught and tutored children.

What major crop did the portuguese produce using slaves from africa? a. tea c. coffee b. bananas d. sugarcane select the best answer from the choices provided 0 a ooo cc cc