While many great lakes cities are losing population yearly, the american southwest is one of the country's fastest growing regions true or false

This is true and it is the worlds 4th fastest growing nation

true

Explanation:

The southwestern states of the United States are accounts for the fastest growing states of the north America and are places of large population growth and have an estimated 9.6 million of the population And are considered to be top big states in the land territory and are bread baskets.  The Phoenix, Las Vegas and Utah have witnessed some of the highest population growth in the last decades.

Physical systems is the answer