Cunard, an Anglo-American company, was founded in 1840. Among its famous ships were the RMS Lusitania, launched in 1907 and sunk by a German torpedo missile in 1915, and the Mauretania, launched in 1906.
The White Star Line was a British shipping company founded in 1869. Its most famous ship was the ill-fated RMS Titanic, which sank in the North Atlantic in April 1912.
White Star merged with Cunard in 1934.