Greater Khorasan
The third part deals with the Mughal/Persian architecture in India. The influence Persian-style architecture and language in India began with the Tughlaq dynasty; in addition, all the ruling dynasties after them were originally from Greater Khorasan, an area dominated by Persian language and culture. The Mughal dynasty also came from Greater Khorasan, which is why the book describes Mughal architecture as the Khorasanid or Persian style of architecture.