I need help!Can someone check this and correct me if there's any grammatical mistakes. Thank You

On 13 December 2019, students of IEH school ,class 11 and 12 visited the government tea factory, gossaigaon for the field study and collect information and data about tea. the factory is located 55 kilometre away from the Tezpur town on the way to NH21 .The main mode of transport is train, bus, truck, motorbike.

Thank You
:)

a caption indicating the purpose of the diagram

explanation:

the african society basically suffered the consequences of colonization and apartheid directly attacking the black people, first, during the colonialism and its main idea which which "white people" had better rights, affecting   them principally in the right to establish black people in their territories, access to quality education and health services and took away any civil right even to the black people to feel they have the same opportunities as the settlers.