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 Expedition commemorative medal 1892 award of the Dahomey Expedition commemorative medal: The Dahomey Expedition commemorative medal was a 30 mm in diameter silver medal, its design was from Jean-Baptiste Daniel-Dupuis. The obverse of the medal features an effigy of the Republic and the words RÉPUBLIQUE FRANÇAISE (English: FRENCH REPUBLIC) enclosed within a laurel wreath running along the entire circumference. In accordance with convention, the Republic is represented as a helmeted young woman with the word PATRIE (English: HOMELAND) inscribed on the visor of her helmet. The reverse of the medal featured, within the same laurel wreath as on the obverse, in the upper section,