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
History of the Kingdom of Dahomey area (or were possibly a result of intermarriage between the Aja people and the Gedevi). The Palace in Abomey was established in the early 17th century. The foundational king of the Kingdom of Dahomey is often considered Houegbadja (c.1645-1685) who built the Royal Palaces of Abomey and began raiding and taking over towns outside of the Abomey plateau. At the same time, the slave trade began increasing in size in the coastal region through the Kingdom of Whydah and Allada and trade with the Portuguese, Dutch, and British. The Dahomey Kingdom became known to European traders at this time as