Observe the given map and answer the questions based on it:
(1) To which topic is this map related?
(2) Name any one centre of independence struggle of 1857 in present Bangladesh.
(3) Name any one centre of independence struggle of 1857 in present Pakistan.
(4) Name any one place of independence struggle of 1857 in present Maharashtra.
(5) Name the Indian island located in the Arabian Sea.