***Warning...if you're a Parker/River shipper...YOU AIN'T GONNA LIKE THIS SELFACY***
This is a Silver Spoon Legacy (Selfacy) where it starts out with the Legacy Founder winning the §50M fortune through SimLottoMax. My Sunset Valley is situated in British Columbia, Canada (hence the reason there are Canadian flags on all the buildings and I've been seriously thinking about replacing those plum palm trees with evergreens and Douglas firs as well as the occasional West Coast tree.
As far as the Canadian flags on WA towns. Just use your imagination and picture the Egyptian, Chinese and French flags flying on those flagpoles rather than the beautiful Canadian flag. Lisen801 would have had to write a whole plum-ton of extra code if he wanted to replace all the WA countries with their own proper country flags and I don't think it's necessary, especially when we can imagine otherwise.
Author Note: I'm putting this in spoilers because of how "picture intensive" this thread is. The story is contained in the spoilers. Otherwise it would take countless hours for all the screencaps to load.