Answer:
b. Poland
Step-by-step explanation:
The revolution began in Poland with the creation of Solidarity, the worker's movement that challenged the Communist government (the supposed representatives of the "workers' paradise) for authority. This was the first movement in the Eastern bloc that had not been brutally suppressed. This de-legitimized the Communist claim as representatives of the people's will. It continued when the Hungarian authorities decided to no longer interdict those seeking to leave the state by crossing the boundary between Hungary and Austria. This led to a flood of refugees from Eastern Europe streaming into Hungary to escape to the West. The defining event was then the collapse of the Berlin Wall in East Germany. With the exception of Romania, the revolutions were largely peaceful as the governments put up only token resistant to the clear will of the people for the end of Communist rule and democratic reform.