Question

Explain why the author feels that the only thing manhattab and Antigua share is 'geographical definition' of being an island

Answer 1

They, both the "islands" Antigua and Manhattan are technically by geographical terms islands, as they are not connected by land to a continent or another body of land. They are surrounded by water, thus Isolated land, Island.

Answer 2

the author felt this because the only thing manhattab and antigua share is that they both were covered with water and were isolated
hope it will be helpful