Operation Crusader relieved the 6th Australian Division in this country's province of Cyrenaica during the Siege of Tobruk. A so-called "Eighth Wonder of the World," which serves cities like Sirte in this nation, is the "Great Manmade River." Operation El Dorado Canyon was a bombing campaign in response to this country's 1986 bombing of a West Berlin discothèque. A leader of this country wrote The Green Book and was killed by rebels in 2011 after the fall of Tripoli. For 10 points, name this African country that was led by Muammar Gaddafi.
a) Egypt
b) Libya
c) Algeria
d) Sudan