AQA · A-Level · History

    Course version: 7042 · Version from Sept 2017

    The Byzantine Empire c1071: the internal problems of the Byzantine Empire;…

    Full specification wording

    1A The Age of the Crusades, c1071–1204 – The origins of conflict and the First Crusade, c1071–c1099: The Byzantine Empire c1071: the internal problems of the Byzantine Empire; the impact of defeat in the Battle of Manzikert

    By 1071, the Byzantine Empire faced severe internal crises, including a succession of weak emperors following Basil II, debasement of the nomisma currency, and bitter factional struggles between…

    Checked against the AQA 7042 specification (opens in a new tab) on .

    • Point 3 of 6
    • 4 key terms

    Study notes

    From the checked teaching notes for this specification point.

    The idea

    By 1071, the Byzantine Empire faced severe internal crises, including a succession of weak emperors following Basil II, debasement of the nomisma currency, and bitter factional struggles between the civil aristocracy in Constantinople and the military elite in the provinces. This internal decay culminated in the catastrophic defeat at the Battle of Manzikert (1071) against the Seljuk Turks. The impact was devastating: Emperor Romanos IV Diogenes was captured, triggering a brutal civil war that stripped Anatolia of its defences. Consequently, the Seljuks overran Asia Minor, depriving the Empire of its primary source of grain, tax revenue, and military recruits, ultimately forcing Alexios I Komnenos to seek Western aid.

    What earns the marks

    • Identify specific internal problems, such as the debasement of the currency and the neglect of the thematic (provincial) army system.
    • Explain the factional rivalry between the civil bureaucracy and the military aristocracy, which undermined imperial stability and military effectiveness.
    • Assess the immediate impact of Manzikert, notably the capture of Romanos IV and the ensuing civil war that left the eastern borders undefended.
    • Evaluate the long-term consequences of losing Anatolia to the Seljuk Turks, focusing on the loss of vital agricultural land, tax revenue, and manpower.

    Common mistakes and how to put them right

    • Claiming the Seljuk Turks immediately conquered Constantinople after Manzikert.

      Put it right: State that the Seljuks conquered Anatolia (Asia Minor), while Constantinople remained secure until 1204.

    • Viewing the defeat at Manzikert solely as a military failure.

      Put it right: Explain that the defeat was exacerbated by internal treachery, such as the betrayal by Andronikos Doukas, reflecting deeper factional divides.

    • Assuming the Byzantine Empire collapsed entirely in 1071.

      Put it right: Emphasise that the Empire survived but was severely weakened, prompting Alexios I to request mercenaries from the West.

    Exam tips

    • Link the internal political instability directly to the military failure at Manzikert to demonstrate complex causation.
    • Use specific terms like 'thematic system' and 'nomisma' to add precise historical detail to your arguments.
    • When evaluating the impact of Manzikert, distinguish between the short-term political chaos and the long-term economic and territorial losses.

    Try the lesson

    The start of the 1A The Age of the Crusades, c1071–1204 – The origins of conflict and the First Crusade, c1071–c1099: The Byzantine Empire c1071: the internal problems of the Byzantine Empire; the impact of defeat in the Battle of Manzikert lesson, made from checked teaching notes for this specification point.

    Have a go first

    Which of the following was a direct consequence of the Byzantine defeat at the Battle of Manzikert in 1071?

    Listen

    By 1071, the Byzantine Empire faced severe internal crises, including a succession of weak emperors following Basil II, debasement of the nomisma currency, and bitter factional struggles between the civil aristocracy in Constantinople and the military elite in the provinces. This internal decay culminated in the catastrophic defeat at the Battle of Manzikert (1071) against the Seljuk Turks. The impact was devastating: Emperor Romanos IV Diogenes was captured, triggering a brutal civil war that stripped Anatolia of its defences. Consequently, the Seljuks overran Asia Minor, depriving the Empire of its primary source of grain, tax revenue, and military recruits, ultimately forcing Alexios I Komnenos to seek Western aid. A strong answer earns marks for these points. Identify specific internal problems, such as the debasement of the currency and the neglect of the thematic (provincial) army system. Explain the factional rivalry between the civil bureaucracy and the military aristocracy, which undermined imperial stability and military effectiveness. Assess the immediate impact of Manzikert, notably the capture of Romanos IV and the ensuing civil war that left the eastern borders undefended. Evaluate the long-term consequences of losing Anatolia to the Seljuk Turks, focusing on the loss of vital agricultural land, tax revenue, and manpower. A common slip: Claiming the Seljuk Turks immediately conquered Constantinople after Manzikert. Instead, State that the Seljuks conquered Anatolia (Asia Minor), while Constantinople remained secure until 1204. Exam tip: Link the internal political instability directly to the military failure at Manzikert to demonstrate complex causation.

    Key words

    Say what each word means before you turn the card.

    Political instability and factionalism

    Try answering aloud or in your head before turning the card.

    Military decline and frontier defence

    Try answering aloud or in your head before turning the card.

    Economic crisis and resource loss

    Try answering aloud or in your head before turning the card.

    The rise of the Seljuk Turks

    Try answering aloud or in your head before turning the card.

    See every definition
    Political instability and factionalism
    Bitter factional struggles between the civil aristocracy in Constantinople and the military elite in the provinces, alongside a succession of weak emperors following Basil II.
    Military decline and frontier defence
    Neglect of the thematic (provincial) army system, which undermined military effectiveness and left the eastern borders undefended after Manzikert.
    Economic crisis and resource loss
    Debasement of the nomisma currency, and the loss of Anatolia as the Empire's primary source of grain, tax revenue and military recruits.
    The rise of the Seljuk Turks
    The Seljuks defeated the Byzantines at the Battle of Manzikert in 1071 and subsequently overran Asia Minor.

    There is more to this lesson

    The full lesson goes on to check your understanding and help you earn the marks. Create a free account to carry on, with your progress saved.

    Carry on with the full lesson

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    Test your understanding of 1A The Age of the Crusades, c1071–1204 – The origins of conflict and the First Crusade, c1071–c1099: The Byzantine Empire c1071: the internal problems of the Byzantine Empire; the impact of defeat in the Battle of Manzikert

    Active recall beats re-reading. Take an instant quiz now to test what you’ve learned and lock it into long-term memory.

    Take topic quiz

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge