major reviews major revision major revisions major revolution major rich major risk major risk factor major risk factors major risks major rival major rivals major river major rivers major road major roadblock major roads major roadways major robert major rock major rogers major role major role in determining major role in the development major roles major roman major ross major route major routes major rule major russian major safety major said major sales major savings major says major scale major scandal major school major schools major science major scientific major seaport major seaports major search major search engines major second major section major sections major sector major sectors major sects major security major security breach major segment major segments major seismic major selling point major seminary major seo major series major service major services major setback major setbacks major settlement major settlements major seventh major share major shareholder major shareholders major sharpe major sheppard major shift major shifts major shipping major shock major shopping major shopping centers major shortage major shortcoming major shortcomings major side major side effect major side effects major sights major sign major significance major signs major sin major single major sins major site major sites major situation major smith major snowstorm major soccer major social major social and economic