The Ottoman Empire, already introduced in an earlier unit as a small Anatolian principality founded around 1299, expanded very significantly during the period covered by this unit (1450-1750) to become:
- **A)** One of the most significant and extensive land-based empires of this period, controlling considerable territory across the Middle East, North Africa, and Southeastern Europe, and notably capturing the significant Byzantine capital of Constantinople in 1453 (already discussed in an earlier unit as a significant center of Eastern Orthodox Christianity), an event generally regarded as marking the final end of the Byzantine Empire - the Ottoman Empire's own very significant territorial expansion and considerable political, military, and economic sophistication provides an important foundational example for this unit's own broader comparative coverage of significant land-based empires during this period
- **B)** The Ottoman Empire's own significant later expansion having no meaningful, describable relationship to the earlier Ottoman founding already discussed in an earlier unit, the 1453 capture of Constantinople, or the broader significant land-based empire comparison already discussed at multiple points throughout this unit
- **C)** An empire that achieved essentially no significant further territorial expansion of any kind beyond its own comparatively limited earlier Anatolian territory already discussed in an earlier unit, a characterization that significantly understates the Ottoman Empire's own actual, well-documented very significant later territorial expansion during this specific period
- **D)** An empire that captured Constantinople considerably earlier than 1453, a characterization that inaccurately misplaces this specific significant historical event's own actual, well-documented 1453 occurrence
The Ottoman Empire expanded very significantly to become one of the most significant land-based empires of this period, controlling considerable territory across the Middle East, North Africa, and Southeastern Europe, notably capturing the significant Byzantine capital of Constantinople in 1453, an event generally regarded as marking the final end of the Byzantine Empire.