Complex sentence: Village schools opened with government subsidies in the early 20th century and many opened after Wolrd War II. Due to a decline in the birthrate, by the 1990s the number of school students was declining and many village schools began to close.
Split into simpler sentences: Village schools opened with government subsidies in the early 20th century. Many village schools opened after Wolrd War II. Due to a decline in the birthrate, by the 1990s the number of school students was declining and many village schools began to close.