Thousand-yr. domain

• Domain of Otto I: Abbr.
• Eur. inits. until 1806
• Otto I’s realm: abbr
• Otto I was its first leader: Abbr
• Subj. covered on the AP European History test
• Medieval Eur. domain
• Charlemagne's emp.
• Its leader's flag featured a black eagle: Abbr.

Wikipedia Word definitions in Wikipedia
HRE may refer to: Hrê language , spoken in Vietnam H're people , an ethnic group of Vietnam Harare International Airport , in Zimbabwe Holy Roman Empire Holy Roman Emperor Hormone response element HRE Performance Wheels , an American manufacturer Hudson ...