Is there any difference between centre and center?

Question

Answer

centre and center mean the same- only that centre is used in Britain and center is used in USA

Answer

Centre is the British English.
Center is the American English

"tre" was hard to pronounce. The editor chaned "tre" to "ter" and published it in the first version of American dictionary.

Answer

Centre is the British English spelling
Center, is the American English spelling.

Both are accepted worldwide.