When did lebanese people begin using american dollars

During the Lebanese Civil War the value decreased rapidly until 1992, when one dollar was worth over 2500 pounds. Subsequently the value increased again, and since December 1997 the rate of the pound has been fixed at 1507.5 pounds per US$.

Explanation:

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."