Statistics for occurrence #1 of “Prairie du Rocher” in entry united-states-of-america-idaho of Harper's Encyclopedia of United States History:
...askia as the seat of government......Feb. 3, 1809
Ninian Edwards commissioned governor by Madison......April 24, 1809
Mail route established by law from Vincennes to St. Louis, via Kaskaskia, Prairie du Rocher , and Cahokia......1810
Illinois raised to second grade of territorial government......May 21, 1812
Owing to Indian murders and outrages a cordon of forts and block-houses is erected in Illino...
| Max. Freq. | Min. Freq. | ||||||
|---|---|---|---|---|---|---|---|
| Entity | Corpus | Doc | Corpus | Doc | |||
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.