In the 1900s, a lot of sugar refineries and plantations began to be established with the boundaries of the community of Kaneohe. This was because Kaneohe became of the major sugar producing areas of Hawaii, and the industry grew to become very big. Because of the fact that a lot of people came to the community of Kaneohe from foreign lands situated near to Kaneohe, the ancestry and the cultural heritage of the land is very diverse. They are formed from the different racial origins as well as cultures which were brought along with the people who came to Kaneohe in the past. The reason why these people came here was because they had the opportunity of getting work as a farmer in one of the sugar plantations, and they thought that they could get a good and a better life.

In the Second World War, a major part was played by the community of Kaneohe and the Kaneohe Bay. This war was fought in the middle of the 1900s. the first bomb which was dropped on the island was on the shores of this island which was a tropical paradise. Japanese carriers and ships tried to land on this island so that they could get spoils of war from the people who lived here. But this did not happen because bombs were already sent to Nagasaki and Hiroshima.