Complex sentence: Prince Boris moved to the Moika palace in St. Petersburg with his wife Zinaida and son Nikolai and the Arkhangelskoye palace was soon derelict, the animal in the palace zoo was sold and much of the collection moved.
Split into simpler sentences: Prince Boris moved to the Moika palace in St. Petersburg with his wife, Zinaida, and son Nicholas. The Arkhangelskoye palace was soon derelict; the animals in the palace zoo were sold and much of the collection moved.