Passage: Sir Ahmed Salman Rushdie  (born 19 June 1947) is a British Indian novelist and essayist. His second novel, Midnight's Children (1981), won the Booker Prize in 1981 and was deemed to be "the best novel of all winners" on two separate occasions, marking the 25th and the 40th anniversary of the prize. Much of his fiction is set on the Indian subcontinent. He combines magical realism with historical fiction; his work is concerned with the many connections, disruptions, and migrations between Eastern and Western civilizations.

Question: In what civilizations were disruptions and migrations caused
Eastern and Western civilizations