Imperial decline refers to the process through which an empire experiences a gradual loss of power, influence, and territorial control, often leading to its eventual disintegration or transformation. This decline can be driven by various factors, including military defeats, economic troubles, internal strife, and the rise of nationalist movements. In the context of the Eastern Question and Ottoman decline, imperial decline encapsulates the challenges faced by the Ottoman Empire as it struggled to maintain its territories and authority amidst external pressures from European powers and internal discontent.