Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A) : Turkish invasion on India was successful.
Reason (R) : There was no political unity in North India.
Select the correct answer from the codes given below :

The Turkish invasions of India, primarily led by Mahmud of Ghazni in the 11th century and Muhammad Ghori in the late 12th century, were successful. While Ghazni focused on plundering, Ghori's victory at the Second Battle of Tarain (1192 CE) established the foundation of Turkish rule in India. The primary reason for their success was the lack of political unity among the North Indian kingdoms. The region was fragmented into several rival Rajput principalities (such as the Chauhans, Gahadavalas, and Chandelas) that were constantly at war with one another. This internal division prevented a coordinated defense against the centralized and tactically superior Turkish forces, allowing the invaders to conquer these kingdoms individually. Thus, both statements are true and (R) correctly explains (A).