Shifting of capital from ‘Puran Haveli’ to present Agartala took place in the…

Concept: Princely-state capitals in colonial-era India were relocated by royal order of the reigning monarch, for strategic, administrative, or symbolic reasons. Each such shift is historically credited to the maharaja who was on the throne at the time the move was carried out, since founding or shifting a capital was a sovereign administrative act.

Application: Maharaja Krishna Kishore Manikya ruled the princely state of Tripura from 1830 to 1849. In 1838, during his reign, the royal seat was shifted from the old palace complex known as 'Puran Haveli' (in the Old Agartala / Rangamati area) to the site of present-day Agartala, where a new palace was established. This move founded present-day Agartala as the kingdom's capital.

1. Identify the event and year: capital shifted from Puran Haveli to present Agartala in 1838.

2. Match the year 1838 to the reign period of each named ruler.

3. Only Krishna Kishore Manikya's reign (1830–1849) spans 1838.

Cross-check: Checking the other named rulers confirms exclusivity — Radha Kishore Manikya reigned c. 1896–1909, Birendra Kishore Manikya reigned 1909–1923 (both decades after 1838), and Ratna Manikya is a regnal name borne by earlier Tripura rulers from centuries before the 19th century. None of these reign periods includes 1838, so Krishna Kishore Manikya is the only ruler whose regime overlaps the year of the shift.

Hence, the shifting of the capital from Puran Haveli to present Agartala in 1838 took place during the regime of Maharaja Krishna Kishore Manikya.