Complex sentence: Originally quite popular in the early 1990s, henley shirts have recently made a fashion comeback, especially in Western countries such as the United States and Canada, but also in some East Asian Countries such as Japan and Korea.
Split into simpler sentences: Originally quite popular in the early 1990s, henley shirts have recently made a fashion comeback, especially in Western countries such as the United States and Canada. As well as in some East Asian Countries such as Japan and Korea.