Complex sentence: From mid- 2008 to early 2009, Radiohead toured North America, Europe, Japan and South America to promote "In Rainbows," and headlined the Reading and Leeds Festivals in August 2009.
Split into simpler sentences: From mid- 2008 to early 2009, Radiohead toured North America, Europe, Japan, and South America to promote "In Rainbows". The band headlined the Reading and Leeds Festivals in August 2009.