Explanation: The history of Delhi as a capital city begins with the Tomara dynasty, which ruled from the 8th to the 12th century. The Tomaras were a Rajput dynasty that established the city of Lal Kot, which is considered the first fortified city in the area that would later become Delhi. Lal Kot was built in the 8th century and served as the capital of the Tomara rulers.
The Tomaras were succeeded by the Chauhans, who were also a Rajput dynasty. The Chauhans expanded Lal Kot and built Qila Rai Pithora, which further fortified the city. However, it is important to note that the Chauhans did not establish Delhi as a capital; they continued the legacy of the Tomaras by expanding and strengthening the city.
The Slave dynasty, also known as the Mamluk dynasty, came to power in the 13th century and was the first Muslim dynasty to rule Delhi. They were not the first to make Delhi their capital, as the city had already been established as a capital by the Tomaras. The Slave dynasty built the Qutb Minar and other significant structures, but they were not the first to establish Delhi as a capital city.
The Khalji dynasty, which followed the Slave dynasty, was also not the first to make Delhi their capital. The Khaljis were known for their military conquests and expansion of the Delhi Sultanate, but they continued the tradition of using Delhi as a capital that had been established by the Tomaras.
Understanding the sequence of dynasties and their contributions to Delhi's history is crucial for comprehending the city's development as a capital. The Tomaras laid the foundation for Delhi's prominence, and subsequent dynasties built upon this legacy, each contributing to the city's historical significance.
In summary, the Tomaras were the first dynasty to establish Delhi as their capital, making them the correct answer to the question. This understanding is essential for students of Indian history, particularly those preparing for competitive examinations that cover ancient Indian history and the early dynasties of Delhi.