Mezue ahịrịokwu na-esonụ: Na United States, ekwuputala iwu agha maka steeti ma ọ bụ mpaghara ọzọ n'okpuru ọnọdụ dị iche iche gụnyere mgbe mwakpo nke mba ọzọ (Hawaii mgbe ndị Japan wakporo Pearl Harbor; New Orleans n'oge Agha nke New Orleans); mgbe nnukwu ọdachi (Chicago mgbe Great Chicago Fire nke 1871; San Francisco mgbe ala ọma jijiji nke 1906); na nzaghachi ọgba aghara metụtara ngagharị iwe na omume igwe mmadụ (San Francisco n'oge
1934 West Coast waterfront strike; Montgomery, Alabama, na-esochi ihe ndị mmadụ mere megide ndị Freedom Riders). E kwupụtakwala ya site n'aka ndị isi obodo na-achọ izere njide ma ọ bụ ihe ịma aka nye ikike ha (Nauvoo, Illinois site n'aka Joseph Smith n'oge Illinois Mormon War na Utah site n'aka Gọvanọ Brigham Young n'oge Agha Utah).