David Kalakaua was the last reigning king of the Hawaiian Islands, serving from 1874 until his death in 1891. He is known for promoting Hawaiian culture and traditions, earning him the nickname "The Merrie Monarch." Kalakaua worked to strengthen the Hawaiian monarchy and sought to modernize the islands through infrastructure improvements and tourism. During his reign, Kalakaua traveled extensively, including a notable trip around the world, which helped to raise awareness of Hawaii. He also established the Hawaiian National Guard and supported the arts, leading to the revival of traditional Hawaiian music and hula. His legacy continues to influence Hawaiian culture today.