Anglo-Americanism
/ˌaŋɡləʊəˈmɛrɪkənɪz(ə)m/ /ˌaŋɡləʊəˈmɛrɪk(ə)nɪz(ə)m/noun
1A characteristically American English word, phrase, or idiom, (now especially) one borrowed into another language.
2Cooperation or integration between England (or Britain) and America; allegiance to or advocacy of this.
Origin
Early 19th century; earliest use found in Christian Observer. From Anglo-American + -ism.