Complex sentence: After various upheavals in Japan, Tokugawa Ieyasu emerged victorious and decided in November 1609 (Keichō 14) to rebuild the castle at Nagoya.
Split into simpler sentences: After various upheavals in Japan, Tokugawa Ieyasu emerged victorious. He decided in November 1609 (Keichō 14) to rebuild the castle at Nagoya.