If you accede to someone's request, you do what they ask.
Britain would not accede to France's request.
I never understood why he didn't just accede to our demands at the outset.
When a member of a royal family accedes to the throne, they become king or queen.
...when Henry VIII acceded to the throne.
There is relatively little information about accedes, maybe you can watch a bilingual story to relax your mood, I wish you a happy day!