Imperator _and_ Imperator electus, 111.
_Imperial power_, its original nature, 69;
its slow growth, 73, 74.
_Innocent the Third_, his relation to the Fourth Crusade, 165.
_International law_, times of its importance, 177-180;
its difficulty, 177;
ceases under the Roman power, 180.
_Italy_, relations of its nations to the Greek cities, 31;
help for its cities sought in Greece, 32-34;
how affected by the Teutonic invasions, 90, 91;
its position under Theodoric, 97, 98;
reconquered by the Empire, 98;
divided between the Empire and the Lombards, ib.;
southern part remains Greek, ib.;
developement of cities in, 186;
its disunion, 189; 193;
position of cities in, 191;
its reunion, 193-195;
its drawbacks, 194.