Annexation, Merger
noun, verbal noun
Join and join with each other. This is an annexation, or a merger. 併合 generally means that one entity absorbs or incorporates another entity, often implying a dominant or controlling role by one of the parties.
へいごう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Just remember that 合 is read as ごう here. Who orchestrated this annexation? Good ol' grandpa ごういち.
アメリカ合衆国は、私が生まれた年にテキサスを併合しました。
The United States of America annexed Texas the year I was born.