Key facts
- Mamata Banerjee was expelled from the Congress organization in 1997.
- Mamata Banerjee founded the Trinamool Congress.
- Mamata Banerjee had become isolated within the Congress party prior to her expulsion.
Mamata Banerjee's political career saw a significant turn when she was expelled from the Congress organization in 1997. This event followed a period where she had become increasingly isolated within the party. Subsequently, Banerjee went on to establish the Trinamool Congress, a party that would go on to become a major political force.