Answer:
Pools that are lined with vinyl are built with metal or plastic frames above ground or set into the excavated hole. Prefab supporting walls or panels made of plastic, steel, or aluminum are joined to the frame, making a form that is then lined with heavy vinyl to form the pool shell.
Explanation:
Answer:
D
Explanation:
The Mongol army conquered hundreds of cities and villages and killed millions of people. One estimate is that about 11% of the world's population was killed either during or immediately after the Mongol invasions (around 37.75–60 million people in Eurasia).
Answer:
Rather than seeing unbalanced government budgets as wrong, Keynes advocated so-called countercyclical fiscal policies that act against the direction of the business cycle. ... Monetary policy could also be used to stimulate the economy—for example, by reducing interest rates to encourage investment.
