D. The reason for the fall of the Maya civilization is still unknown. There are many different theories attempting to explain the cause of the Classic Maya collapse and the abandonment of Maya cities in the southern Maya lowlands of Mesoamerica between the 8th and 9th centuries: climate change, drought, deforestation, etc. but although the drought is the leading theory at the moment the truth is yet unknown.
<span>Jefferson was worried over the agreement because his new agreement would be a threat to the united states.
</span>
<span>1. A letter repeats its value that many times (XXX = 30, CC = 200, etc.). A letter can only be repeated three times.
<span>2. If one or more letters are placed after another letter of greater value, add that amount. VI = 6 (5 + 1 = 6)LXX = 70 (50 + 10 + 10 = 70)MCC = 1200 (1000 + 100 + 100 = 1200)
</span>3. If a letter is placed before another letter of greater value, subtract that amount. IV = 4 (5 – 1 = 4)XC = 90 (100 – 10 = 90)<span>CM = 900 (1000 – 100 = 900)</span></span>
Answer:
Ghana was the first kingdom to take control of the salt trade.