SimilarityRank
in_U.S._history 0.859 60655
American_history 0.666 28141
world_history 0.664 28733
in_human_history 0.646 48002
U.S._history 0.630 74846
in_recent_history 0.608 63781
history 0.593 354
our_history 0.583 12200
the_Civil_War 0.578 11655
in_its_history 0.574 46144
modern_history 0.572 93951
the_American_Civil_War 0.562 99889
since_World_War_II 0.553 67848
in_America 0.552 2624
the_Civil_Rights_Movement 0.552 62659
the_American_revolution 0.546 61560
political_history 0.531 61414
Abraham_Lincoln 0.527 21472
the_history_of 0.527 1208
in_American_society 0.524 93864
one_of_America 0.524 66793
the_Revolutionary_War 0.514 89614
of_the_twentieth_century 0.513 38975
in_the_twentieth_century 0.509 42594
the_civil_right_movement 0.507 34283