Answer:
Having surplus food also allowed more people to be fed, so the population of the world began to grow rapidly.
Explanation: This meant that they no longer had to travel from place to place. As the population increased, settlements grew into towns. People did not have to spend all of their days producing food.
Answer:
government by the people; a form of government in which the supreme power is vested in the people and exercised directly by them or by their elected agents under a free electoral system.
Explanation:
Well I would personally say the engineering industry, as during the wartime technology needs to be developed/improved in order to defeat the opposing side.
Answer:
Due to mutation.
Explanation:
Due to mutation, the rice plants are able to produce gluten like other grain crops such as wheat etc. In this mutation, change occurs in a DNA sequence of the rice plant by exposing the plant to ionized radiation. Due to this radiation, change occurs in the DNA of rice plant and the rice plant is able to produce gluten like wheat plant. So mutation is a very useful method for producing substances which a plant can't produce in its normal condition.
