When humans first started to appear they had yet to figure out how to farm or fish. However they knew how to hunt animals using spears and such. They also were gatherers because they gathered berries. Later in the human race farming and fishing came into play. So I say A. Hunters......Gatherers.
How prices serve as an incentive in a market economy is whenever there is a decline in the supply of a particular commodity, what the suppliers do is increase the prices, and in contrast, when there is enough supply, they decrease the prices as well. Hope this answers your question.
Answer:
A siege is a military's tactics that's carried out by surrounding the enemy's town with our own forces.
This tactic Brought Victory for American soldiers during our battle for Revolution against British army in Yorktown. In 1781, American colonists mobilized around 9,000 soldiers to surround Yorktown that occupied by the British soldiers.
This siege cut off every potential path that Yorktown soldiers usually used to receive their food supplies. In the end, the food supplies inside Yorktown started to gradually diminished and the leaders of Yorktown decided to surrender.