Complex sentence: The phylloxera plague at the end of the 19th century caused significant damage to this wine region as well and following the plague vineyards were modernized in order to avoid erosion of the soil.
Split into simpler sentences: The phylloxera plague at the end of the 19th century caused significant damage to this wine region as well. Following the plague the wine yards were modernized in order to avoid the erosion of the soil.