第3题：努纳武特在哪一天成为加拿大的一个领土？

Nunavut officially became Canada's newest territory on April 1, 1999. It was created from the eastern part of the Northwest Territories and represents Inuit self-government and culture.

努纳武特于1999年4月1日正式成为加拿大第三个领土。它由西北地区东部划分而来，体现了因纽特人的自治和文化。