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.
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.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.