Complex sentence: A few rides were closed and dismantled due to costly settlements and rising insurance premiums in the 1990s, and at last the park's attendance began to suffer as the recession early in that decade reduced visitation.
Split into simpler sentences: A few rides were closed and dismantled due to costly legal settlements and rising insurance premiums in the 1990s. The park's attendance also began to suffer as the recession early in that decade reduced visitation.