Excel predates Unicode by a few years. The first true Excel version on Mac was released in 1985. The first generally recognized use of Unicode dates back to 1988.
Excel CSVs default to the system codepage when reading and writing, which makes some sense given that the files are plain text. You can actually control what codepage is used when importing data but you have to use the import option.
Excel CSVs default to the system codepage when reading and writing, which makes some sense given that the files are plain text. You can actually control what codepage is used when importing data but you have to use the import option.