Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Njem: Alaeze Ukwu Rom nwere etiti ya na Mediterenian, na-achịkwa mba nile dị n'ikperé mmiri ya; osimiri Rhine na Danube na-egosi ókèala ya nke dị n'ebe ugwu. N'okpuru eze ukwu Trajan (narị afọ nke abụọ AD) alaeze ukwu ahụ ruru oke mgbasawanye ya, na-achịkwa ihe dịka 5,900,000 km2 (2,300,000 sq mi) nke ala, gụnyere Italia, Gallia, Dalmatia, Aquitania, Britannia, Baetica, Hispania, Thrace, Macedonia, Greece, Moesia, Dacia, Pannonia, Egypt, Asia Minor, Cappadocia, Armenia, Caucasus, North Africa, Levant na akụkụ nke Mesopotamia. Pax Romana, oge udo, mmepeanya na gọọmentị etiti na-arụ ọrụ nke ọma na mpaghara ndị a na-achịkwa kwụsịrị na narị afọ nke atọ, mgbe ọtụtụ agha obodo mebiri ike akụ na ụba na nke mmekọrịta Rome.  Ajụjụ: Olee ókè ọ na-aga n'ebe ugwu?
Osimiri Rhine na Danube