In which modern country is Halloween a national holiday?

In which modern country is Halloween a national holiday? 英语翻译Thanksgiving Day is an American national holiday which o 英语翻译Thanksgiving Day is an American national holiday ,which which country is london in in which month is our national 句型转换：China is a modern and strong country.(in twenty years) 句型转换 China is a modern and strong country.(in twenty years) Halloween is a holiday for____.A happy b.fun 英语翻译WHAT IS HALLOWEEN?Halloween is a holiday celebrated on O Halloween is an (a ) holiday that Americans celebrate every which country is this company registed in? In which country is the Big Ben?