Ntwo or three sentences, describe how open-market operations change the money supply.

When an economic downturn occurs, the Federal Reserve can try in several ways to help the economy to recover. It can make more money available for lending. In other words, it can increase the money supply by buying securities. ​The Federal Reserve can also make more money available for borrowing by lowering the reserve requirement or the contractual clearing-balance amount so banks can use more of their deposits for loans, and by increasing discount-window lending.

according to the song of roland, the characteristics of an ideal knight are: loyalty to the king, skilled warriors and horseman, valiant, bold, courageous, strong and proud in battle. they should be determined to fulfil their duties and willing to die to make their people safe.