Final answer:
The Hawaiian monarchy was overthrown by a group of American planters supported by the US Marines.
Step-by-step explanation:
The Hawaiian monarchy was overthrown by a group of planters supported by the US Marines. In January of 1893, American planters revolted against Queen Liliuokalani's authority in a bloodless coup. They were supported by a force of 150 US Marines who were called in to protect American lives and property. Queen Liliuokalani surrendered her throne to the superior force of the United States, hoping to be reinstated once leaders in Washington DC investigated how her throne had been overthrown.