Which statements about Ghana's trade are accurate?

Choose all correct answers.

Gold and iron were the two metals that led to the prosperity of the kingdom of Ghana.
Silk and salt were the two main items traded in Ghana.
Ghanaians used "silent trade," bartering goods without speaking to one another.
Ghanaian blacksmiths produced high-quality trade goods out of copper and tin.

What do you think was a drawback to this method of calculating distance

All state and federal officials are required to take an oath to support the constitution. select the best answer from the choices provided t f

Which is not a claim kennedy made? a. the fact that communist cuba is so close to american soil is one reason we need to accelerate our space program. b. his decision to shift the study of space to one of the highest american priorities was one of his most important decisions as president. c. within these last months at least 45 satellites have circled the earth. (i think it's this one) d. the mariner spacecraft now on its way to venus is the most intricate instrument in the history of space science. i need this answer really quick, so .