Complex sentence: His forward-looking designs clearly anticipate some issues and solutions of Modernism, however, his embracement of ornament makes his contribution distinct from the Modern Movement that coalesced in the 1920s and became known as the "International Style".
Split into simpler sentences: His forward-looking designs clearly anticipate some issues and solutions of Modernism. However, his embrace of ornament makes his contribution distinct from the Modern Movement that coalesced in the 1920s and became known as the "International Style".