emmer<span>, </span>einkorn<span> and </span>barley is the answer
I think Lord Acton would most likely agree with the statement: "<span>A federation would be best because it balances power between the state and federal governments.</span>" This is because in this set-up, the power belongs not only to a selected few but to several people. This is unlike the other statements which suggest forms of government that leave the power only to a few people which is close to gaining absolute power.
The correct answer among all the other choices is Lack of weapons and livestock. These factors led to the fall of the empire of Ghana. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.