History · Tribal Movements

With reference to tribal resistance during colonial rule in India, consider the following statements: I. Colonial forest laws restricted traditional rights of tribals over shifting cultivation and forest produce. II. Introduction of new land revenue systems altered customary land relations in tribal regions. III. Expansion of missionary activities in tribal areas had no impact on the nature of tribal resistance movements. IV. Growth of intermediaries between the colonial state and tribal communities intensified economic exploitation. Which of the statements given above are correct?