Tipu Sultan, the ruler of Mysore, made several important contributions:
1. He modernized his army with the help of French experts and used modern weapons in warfare.
2. He encouraged agriculture, trade, and industries, and even sent ambassadors to foreign countries for trade relations.
3. He strongly resisted British expansion in South India and fought bravely in the Anglo-Mysore Wars.
His efforts made him a symbol of resistance against British rule.