Simplify the following text for a Grade 8 native English-speaking person.
Original: During British Rule Shakargarh Tehsil was an administrative subdivision of Gurdaspur District , in 1947 the majority of the district went to India with Pakistan retaining the tehsil of Shakargarh which then became a subdivision of Sialkot District .
Simplified: The line divided Shakargarh from the rest of Gurdaspur district ( which then became part of India ) . Shakargarh then became part of Sialkot District , however when Narowal District was created in 1991 , Shakargarh became part of that district .