Following the defeat of Italian colonial authority in 1941, Amhara Sayint, Lasta, Raya, Wag, and Yejju were annexed to Wollo. Peasant rebellions rocked the province, which included the Woyane rebellion in 1943, and revolts of the Yejju in 1948 and 1970. With the adoption of the new constitution in 1995, Wollo was divided between the Afar Region, which absorbed the part of the province that extended into the Afar Depression; the Tigray Region, which annexed the northwestern corner; and the Amhara Region, which absorbed the remainder of the province in the Ethiopian Highlands.
- 1818 AD Pinkerton Map of Abyssinia (Ethiopia), Sudan & Nubia
- This list of provinces is based on the map in Bahru Zewde, A History of Modern Ethiopia (London: James Currey, 1991), p. 86.
- Sarah Vaughan, "Ethnicity and Power in Ethiopia" (University of Edinburgh: Ph.D. Thesis, 2003), p. 126