I always struggle with this because America certainly has dominated pop culture (which I do understand is what culture in Civ represents), but in terms of cultural achievements America lags considerably behind the mother country. There have been some fine American authors (like Edith Wharton or Mark Twain) and a few good poets (T.S. Elliott, Emily Dickenson...Robert Lowell was a great poet who is criminally underappreciated--have a reading of "
The Public Garden"), but we lack the giants like Shakespeare, Jonson, Donne, Milton, Keats, Austen, the Bronte Sisters, etc. Plus Hemmingway practically invented the terse, economical prose that dominated the twentieth century, and I can't forgive him for it.