An important change that happened during the colonial period in the economic system of Kerala is the growth in plantation crops. Europeans took the initiative to start new plantations and invest capital in them. The main plantations crops were tea, coffee, rubber, and cardamom. Plantations crops proved more successful in Travancore than in Malabar. There were some reasons for that. The soil and high land of Travancore were better than those of Malabar. Therefore plantations crops developed fast in Travancore. This helped the British to earn a lot of wealth. The tax collection system in Malabar was not good enough.