Year 900 (CM) was a
leap year starting on Tuesday (link will display the full calendar) of the
Julian calendar.
It was the 900th year of the Common Era (CE) and Anno Domini (AD) designations, the 900th year of the 1st millennium, the 100th and last year of the 9th century, and the 1st year of the 900s decade.
August –
Abdallah, son of the
Aghlabid emir
Ibrahim II, represses a revolt of his Muslim subjects, and then initiates a campaign against the last Byzantine strongholds in
Sicily.[3]
August 13 –
Zwentibold, king of
Lotharingia, is killed in battle on the
Meuse River, while fighting against his rebellious subjects; subsequently they recognize Louis IV as their rightful suzerain - Lotharingia is then converted from a kingdom to a duchy.[10]
King
Donald II is killed after an 11-year reign. He is succeeded by his cousin
Constantine II as king of
Scotland;[12] he will reign for more than 40 years.
After the rejection of their alliance proposal by the
Bavarians, the
Hungarians attack this country, occupying
Pannonia and parts of
Ostmark, which become part of the Hungarian state.
The
Persian scientist
Muhammad ibn Zakariya al-Razi distinguishes
smallpox from
measles in the course of his writings. Holding against any sort of orthodoxy, particularly
Aristotle's physics, he maintains the conception of an 'absolute' time, regarded by him as "a never-ending flow".
Year 900 (CM) was a
leap year starting on Tuesday (link will display the full calendar) of the
Julian calendar.
It was the 900th year of the Common Era (CE) and Anno Domini (AD) designations, the 900th year of the 1st millennium, the 100th and last year of the 9th century, and the 1st year of the 900s decade.
August –
Abdallah, son of the
Aghlabid emir
Ibrahim II, represses a revolt of his Muslim subjects, and then initiates a campaign against the last Byzantine strongholds in
Sicily.[3]
August 13 –
Zwentibold, king of
Lotharingia, is killed in battle on the
Meuse River, while fighting against his rebellious subjects; subsequently they recognize Louis IV as their rightful suzerain - Lotharingia is then converted from a kingdom to a duchy.[10]
King
Donald II is killed after an 11-year reign. He is succeeded by his cousin
Constantine II as king of
Scotland;[12] he will reign for more than 40 years.
After the rejection of their alliance proposal by the
Bavarians, the
Hungarians attack this country, occupying
Pannonia and parts of
Ostmark, which become part of the Hungarian state.
The
Persian scientist
Muhammad ibn Zakariya al-Razi distinguishes
smallpox from
measles in the course of his writings. Holding against any sort of orthodoxy, particularly
Aristotle's physics, he maintains the conception of an 'absolute' time, regarded by him as "a never-ending flow".