Complex sentence: The preparations for the coronation of King James I were interrupted by a severe plague epidemic, which may have killed over thirty thousand people, and threats of assassination; in 1605 the infamous Gunpowder plot occurred, leading to a backlash against Catholics.
Split into simpler sentences: The preparations for the coronation of King James I were interrupted by a severe plague epidemic, which may have killed over thirty thousand people. In 1605 the infamous Gunpowder plot occurred, leading to a backlash against Catholics.