Dahomey conquered Allada, the origin for the royal family according to oral tradition, and in 1727 he conquered Whydah. This increased size of the kingdom, particularly along the Atlantic coast, and increased power made Dahomey into a regional power. The result was near constant warfare with the main regional state, the Oyo Empire, from 1728 until 1740. The warfare with the Oyo empire resulted in Dahomey assuming a tributary status to the Oyo empire. Tegbesu, also spelled as Tegbessou, was King of Dahomey, in present-day Benin, from 1740 until 1774. Tegbesu was not the oldest son of King Agaja (1718–1740), but
Dahomey to settle in the Abomey plateau. Dakodonu requested additional land from a prominent chief named Dan (or Da) to which the chief responded sarcastically "Should I open up my belly and build you a house in it?" For this insult, Dakodonu killed Dan and began the construction of his palace on the spot. The name of the kingdom was derived from the incident: Dan=chief dan, xo=Belly, me=Inside of. The Kingdom of Dahomey was established around 1600 by the Fon people who had recently settled in the area (or were possibly a result of intermarriage between the Aja people and the