Complex sentence: Twenty years later in 1740 the Breton forest became the Wolves'den: they are poor peasants who want to take revenge of the lords who oppress them and their leader is called the "White Wolf".
Split into simpler sentences: Twenty years later in 1740 the Breton forest became the Wolves'den: they are poor peasants who want to take revenge of the lords who oppress them. Their leader is called the "White Wolf".