After Kamehameha I's death, the Hawaiian Kingdom transitioned to a constitutional monarchy under Kamehameha III. Missionaries arrived in 1820 and greatly influenced the Kingdom, establishing the first schools which emphasized literacy and Christianity. By the 1840s, a written constitution was adopted which established three branches of government, and land ownership laws like the Great Mahele and Kuleana Act were enacted, distributing land but also allowing its sale to foreign interests. In 1843, the Kingdom briefly came under British rule after Lord George Paulet threatened to seize Hawaii for Britain, but the US and UK later recognized Hawaii's independence.