Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Njem: Usoro yiri nke ahụ mere n'ebe bụ Mexico ugbu a, Central America, na akụkụ ụfọdụ nke North America n'etiti 1810 na 1821 na Agha Mexico nke Nnwere Onwe. Enwetara nnwere onwe na 1821 site na njikọta jikọtara n'okpuru Agustín de Iturbide na ndị agha nke nkwa atọ. A nọgidere na-enwe ịdị n'otu ruo oge dị mkpirikpi n'okpuru Alaeze Ukwu Mexico nke Mbụ, ma n'ime afọ iri, mpaghara ahụ lụrụ ọgụ megide United States maka ókèala ala (na-efunahụ ala ndị dị na California na Texas). Ihe ka ukwuu n'ọkụ ahụ bụ n'oge agha gọọmentị Mexico na America site na 1846 ruo 1848.N'afọ 1898, na Greater Antilles, United States meriri Spanish-American War ma weghara Cuba na Puerto Rico, na-akwụsị ịchịkwa ókèala Spanish na America.  Ajụjụ: Gịnị ka US mere na Cuba na Puerto Rico mgbe ha meriri n'agha ahụ?
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