The first black president of the united states was barack obama
Answer:
I can't give you an answer, I don't know what you're talking about
The choices can be found elsewhere and as follows:
(1) lateen sail
(2) iron cannons
(3) camel caravans
(4) moveable type
I think the correct answer from the choices listed above is option 3. The technological innovation that was essential to stimulate the expansion of the gold salt trade in west africa would be camel caravans. They were able to trade more.
Each Mayan city had a king. The king was usually hereditary. The king used his power and wealth to support the nobles. The nobles served as officials and such in the kings administration. The nobles were loyal to the king because he ensured their legitimacy and the king got help in running things from nobles. All right there you go. Hope this is enough and it helps.