ocr: Chad gradually came under Arab domination. The French overthrew the last Arab ruler in 190U. 1960 Independence.NGarta Tombalbaye's one- party state. 1966 Northern-basedrebels start Libyan-backed isurgency. - invade Aozou strip. 1973 Libyans - 1975 Coup. Gen. Malloum comes to power; receives French support. 1979-1982 Civil war between Christian south and Muslim north. 1980 Goukouni Weddeye in power. 1982 Hissène Habré (northerner) defeats Goukouni. France transfers military support to Habre. 1987 Libyans pushed out of Chad. 1990 Idriss Deby invades from exile in Sudan; defeats Habré.