Bulgaria is a unitary state. Since the 1880s, the number of territorial management units has varied from seven to 26. Between 1987 and 1999, the administrative structure consisted of nine provinces (oblasti, singular oblast).
Bulgaria is a unitary state. Its territorial management units have fluctuated in number from seven to 26 since the 1880s. Between 1987 and 1999, the administrative structure consisted of nine provinces (oblasti).