Simplify the following text for a Grade 9 native English-speaking person.
Original: The Battle of Miani ( February 17 , 1843 ) was a battle between British forces under Sir Charles Napier and the Talpur rulers of Sindh ( now a province of Pakistan ) .
Simplified: The Battle of Miani ( February 17 , 1843 ) was a battle between British forces under Sir Charles Napier and the Talpur Amirs of Sindh , Pakistan .