Complex sentence: The Viceroyalty of New Spain was established in 1535 in the Kingdom of New Spain, it was the first New World viceroyalty and one of only two in the Spanish empire until the eighteenth-century Bourbon Reforms.
Split into simpler sentences: The Viceroyalty of New Spain was established in 1535 in the Kingdom of New Spain. It was the first New World viceroyalty and one of only two in the Spanish empire until the eighteenth-century Bourbon Reforms.