The US overthrew Liliuokalani because she did not keep the treaty that the former leader of Hawaii had with the planters. This treaty stated that the planters could plant sugar crops in Hawaii. When Liliuokalani came to power she was anti-american and did not want the planters there, so the americans overthrew her. Basically, the reason was money- the US wanted to control the sugar plantations in Hawaii and they wanted to exploit the native population.
The Sugar Boycott was led by members of the Quaker faith, including important female voices such as Elizabeth Heyrick from Leicester who recognised the ways in which the sugar trade was helping to support the slave trade.
