The island was subjected to foreign domination in the 19th century.

subjected 是动词 subject 的过去分词形式，subject 由前缀 sub-（表示"在...之下"）和词根 ject（"投掷"）组成，原意是"使臣服、使服从"。subjected to 表示"遭受、经受"，在这里指岛屿被迫接受外国统治。