Complex sentence: This civil war, which raged for half a century, led to Kongo's decentralization and fundamental changes, leading to Kongolese historians, even in 1700, regarding the battle as a decisive turning point in their country's history.
Split into simpler sentences: This civil war, which raged for half a century, led to Kongo's decentralization and fundamental changes. This is why Kongolese historians, even in 1700, regarded the battle as a decisive turning point in their country's history.