If you accede to someone's request, you do what they ask.
例句
Britain would not accede to France's request.英國不肯同意法國的要求。I never understood why he didn't just accede to our demands at the outset.我一直搞不懂他為什么不一開始就同意我們的要求。
VERB
（君主）即位
When a member of a royal family accedes to the throne, they become king or queen.