Final answer:
Halloween is celebrated primarily in the U.S.A., but it is also celebrated in other countries including China and Scotland.
Step-by-step explanation:
Halloween is primarily celebrated in the U.S.A., although it is also celebrated in some other countries. However, the country that celebrates Halloween today is all of these. While it is not as widely celebrated in China and Scotland as it is in the U.S.A., Halloween festivities have gained popularity in both of these countries in recent years. In China, Halloween has become more popular among young people due to Western influences, and in Scotland, there are Halloween events and traditions that are similar to those in the U.S.A.
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