Simplify the following text for a Grade 9 native English-speaking person.
Original: His ancestral roots linked to Rajput Clans of Rajisthan from where his father immigrated and settled in Karachi after the Sindh was amalgamated in British empire since 1843 .
Simplified: His ancestral roots linked to Rajput Clans of Rajisthan ( present-day India ) . His father had moved from Rajistan and settled in Karachi after the Sindh was under the jurisdiction of British empire since 1843 .