system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Was Voldemort only a threat to the British wizarding world, or did he pose a greater threat to global wizardry?

Side questions; Has there been other Voldemorts in other cultures? 

How big is the British wizard society in comparison with, say, the Brazilian or Japanese, and how important is it in relation to these?

+1: Are there ministries of magic in other cultures, or is the British ministry responsible for the rest of the world?
gpt
Voldemort wasn't an *immediate* threat to other countries. What you have to understand, is that both times Voldemort was stopped, it was just before his following was rolled over into a great power. The first time, he was ready to bring all of his Death Eaters out into the open and form a proper coalition against Britain, with just one loose end to tie up before he felt he could do so safely.  
  
The second time was much the same. If he had come out of his encounter in Godric's Hollow unscathed, or if he had won the Battle of Hogwarts, he would have risen in power extremely quickly, and would have rapidly become a serious threat to the wizarding world as a whole, but luckily this wasn't the case.