Why do Australians call jumpers sweaters?

Australians refer to jumpers as sweaters due to historical influences from British English, where the term "jumper" originated. In Australia, "sweater" is commonly used, likely due to American influence and the global popularity of American culture. Both terms describe similar garments, but regional preferences have led to the coexistence of the two in different contexts. Ultimately, it's a reflection of the diverse linguistic influences in Australia.