Concept:
• The Mughal Empire, at its zenith, covered almost the entire Indian subcontinent.
• Its administrative structure was divided into 'Subas' (provinces), which were the primary units of governance.
Step 1: Identifying core imperial territories
Delhi was one of the most critical territories and administrative centers of the Mughal Empire.
It served as the imperial capital for several rulers, most notably under Shah Jahan, who built the city of Shahjahanabad (Old Delhi) and the Red Fort.
Step 2: Acknowledging the expansion under different rulers
Under Akbar, the empire expanded to include territories like Bengal, Gujarat, and parts of the Deccan.
However, the Delhi-Agra region remained the political heartland or the 'Suba of Delhi' throughout the Mughal era.