the formal act of acquiring something (especially territory) by conquest or occupation; "the French annexation of Madagascar as a colony in 1896"; "a protectorate has frequently been a first step to annexation"征服、または占領によって何か(特に領土)を得る正式の行為併合
例:The French annexation of Madagascar as a colony in 1896. フランスが植民地として1896年にマダガスカルを併合したこと。