Didn't know what you meant... I rewrote the paragraph
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The Lusitania was a ship built in Great Britain, and it made several trips across the Atlantic. In 1915, Britain was in a middle of a war with Germany and the Lusitania was struck by torpedos. Eighteen minutes after the impact, the ship sank.
Grammar Fixes
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The Lusitania was the name of a ship. It was built in Great Britain over a hundred years ago and made several trips across the Atlantic. In 1915, Britain was in a war with Germany. Eighteen minutes after it was struck, the ship sank.