Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. Major research has shown that these problems have sprung from unwillingness of people.

B. These people were intolerant of other people’s thought and beliefs.

C. Science has influenced human civilisation in a lot of ways.

D. Its major impact is the unveiling of misery of human history.