Charles IV of Lorraine was a significant figure in European history, born on February 18, 1604. He became the Duke of Lorraine in 1625 and ruled until 1675. His reign was marked by efforts to strengthen his duchy and improve its economy, particularly through trade and agriculture. In 1634, Charles IV was involved in the Thirty Years' War, aligning with the Habsburgs against the Protestant forces. He faced challenges from both internal and external conflicts, but his leadership helped maintain the stability of Lorraine during turbulent times. Charles IV passed away on December 18, 1675, leaving a lasting legacy in the region.