Answer: price
Explanation: The invisible hand uses the power of price to guide the market economy, price determine both the level of demand and supply in accordance with the the law of demand and supply.
<span>On one side it had the Nile which was difficult to cross if the Egyptians didn't want people to cross it. On two sides there was a desert and one the north there was the sea. If Egypt wanted to isolate itself or be defensive in a war it had no problems doing so. It could easily restrict access of foreign cultures.</span>
B. October.
They celebrate it the second Monday in October to be exact
It can be called groundwater or fossil water depending how specific you want to be