Which of the following did not rule the Indian subcontinent?

Which of the following did not rule the Indian subcontinent?

مندرجہ ذیل میں سے کس نے برصغیر پاک و ہند پر حکمرانی نہیں کی؟
Explanation

The British, Arabs, and Turks all established rule or influence in parts of the Indian subcontinent.

The Romans never ruled the Indian subcontinent; they had trade contacts but no political control.