El Nino happens about every two to seven years. The closest answer here would be D., about every three to seven years
Answer:
Explanation:
The achievement of sovereignty for the Quebec state. The creation of a political and economic association between this new independent state and Canada.
The city-states of ancient Mesopotamia were independent cities constructed around temples and entirely self-contained within mighty perimeter walls.<span> City-states were unified with each other only by their shared use of the Sumerian language. They spent most of their time engaged in conflict over resources.</span>