Peasants who survived the plague were able to get higher wages for their work. Why were they able to get these higher wages?

Peasants were now able to demand higher wages and better working conditions as landlords were not able to replace them with as much ease as previously. As a result peasants would be able to afford better living conditions'. After the plagues land and corn were plentiful, rents and restrictions reduced and standards of living improved.

we will reach the goal of freedom in birmingham and all over the nation,

the american revolution was by the middle and upper class, and the french was by the lower and middle class.