Maharaja Bir Chandra Manikya's reign in Tripura was during the period ____.

A princely ruler's reign is dated from the year of accession — when the ruler formally ascends the throne, typically on the death of the previous ruler — through to the year that ruler's own rule ends, by death, deposition, or abdication. Matching a monarch to a period therefore requires confirming both boundary years against verified succession records, not just the general era.

Maharaja Bir Chandra Manikya Bahadur of the princely state of Tripura acceded to the throne in 1862, succeeding his elder brother, Maharaja Ishan Chandra Manikya (who had himself succeeded their father, Maharaja Krishna Kishore Manikya, in 1849). Bir Chandra Manikya is remembered as a reform-minded ruler who modernised the state's civil administration, judiciary and land-revenue system. He reigned until his own death in 1896, when his son Maharaja Radha Kishore Manikya succeeded him.

This dating is corroborated at both ends by the surrounding reigns recorded in Tripura's own dynastic chronology: Ishan Chandra Manikya's reign is independently recorded as ending in 1862, precisely the year Bir Chandra's reign begins, and Radha Kishore Manikya's accession is independently recorded as occurring in 1896, precisely the year Bir Chandra's reign ends. Bir Chandra Manikya also maintained a well-documented literary correspondence with Rabindranath Tagore during this period, though Tagore's own recorded visit to Tripura came later, under Radha Kishore Manikya.

• 1828-1839 is an eleven-year span that ends more than two decades before Bir Chandra Manikya's own 1862 accession.

• 1839-1849 is a ten-year span that likewise falls well before the 1862 accession.

• 1849-1862 is a thirteen-year span that ends exactly at 1862, the year his reign begins — i.e., it is the span immediately preceding his own accession.

The verified span of Maharaja Bir Chandra Manikya's reign in Tripura is therefore 1862-1896.