Answer:
Food Surplus
Explanation:
The dragon backbone pump was a device used in china during the Song dynasty, to pump the water into canals to irrigate crops and to collect fresh water from wells. The unique thing about this device that even a single man could operate it. It was in use for almost 300 years. It was portable and advanced irrigation and farming became much easier by allowing one person to do the job of many. It helped to produce surplus food.
<span>Peter Minuit is known for purchasing Manhattan Island for the Dutch from the local Native Americans in 1626. According to legend, Manhattan was purchased for $24 worth of trinkets, but there is no historical evidence that beads were used. The historical records stated that Manhattan was purchased for the “value of 60 guilders” in goods, an amount worth $1,050 in 2015 dollars.</span>
It was the MTV group that witnessed the switchover from analog to digital; hard wired to wireless.
