historyTimeline of the Alaska Purchase20 eventsMajor diplomatic, political, and long-term milestones in the Alaska Purchase and its consequences.
historyTimeline of the Rwandan Genocide20 eventsMajor political, military, and humanitarian milestones in the 1994 Rwandan genocide.
historyTimeline of the Romanovs20 eventsMajor dynastic, political, and imperial milestones in the history of the Romanov dynasty.
historyTimeline of the Suez Canal20 eventsMajor political, engineering, and geopolitical milestones in the history of the Suez Canal.