The correct answer is money supply.
The money supply includes all monetary assets that are available in an economy at a specific time period. If the money supply drastically increases then inflation happens and if the money supply decreases then deflation happens. Both can cause horrors for the economy so the economists have to be careful.
The correct answer is B; Fields became more productive, spurring population growth.
Further Explanation:
When the fields became more productive the farmers had more food and could make more money. This had others coming to start their own farm and grow foods. Other ways medieval towns and cities had growth was the trade fairs that would be put up. This helped the cities and towns grow larger and have more of an economy.
When the towns and cities grew, they needed merchant guilds to form and take responsibility for the improvements in the towns and cities. They also were so much trading going on that they started using the credit system instead of using cash.
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In the terms of war, No Man's Land is the area located between two opposing forces.
Pros: Gave more jobs to people
Production of goods
People had access to cheaper goods and better education
Cons: bad quality working condition
Pollution
Overpopulation
They have the right to establish local governments the other options only congress can do