I think it is not because it is not
The mayas was the first to create a system of mathematics in which the circle represented a 1 and a bar represented a 5
so The Mayas is the correct answer
The Roman Catholic. Church was organized byNational Conferences of bishops
I am pretty sure the answer is bottom one, and the second one!
1) traders might be attacked by other civilizations and looters
2) They may disagree upon the pricing and the worth of traded items
3) One may want to get rid of a item, another may not want to buy it, resulting in hatred and eventually war if it becomes too 'aggressive'
hope this helps
