In some countries, their principal chinese characters are represented differently between Chinese and Japanese. For example,

* 意 vs 伊 (Italy)
* 法 vs 仏 (France)
* 德 vs 独 (Germany)

That being said, there are some cases that use the same principal character, like 韩 (Korea) and 英 (UK).

Why are they different between these two languages? What made them apart during the long history?