Under the $\_\_\_\_\_\_\_\_\_\_\_\_$ from $1979-1992($before the euro existed$),$ the currencies of many European countries were currencies of most of these member countries were allowed to fluctuate by no more than $2\mathrm{.}25$ percent $(6$ percent for some currencies$)$ from the initially established values.

Question $8$ options:

$$European Monetary System $($EMS$).$

$$snake agreement.

$$Maastricht Treaty.

$$Bretton Woods agreement.