All the presidents’ trips to Africa, mapped

Source: http://feeds.washingtonpost.com/c/34656/f/636535/s/48693287/sc/7/l/0L0Swashingtonpost0N0Cblogs0Cworldviews0Cwp0C20A150C0A70C240Call0Ethe0Epresidents0Etrips0Eto0Eafrica0Emapped0C/story01.htm