Biggest Cities in Random Regions

Can you name the 5 biggest cities in these four random world regions? The answers change every time you play!
Regions in bold use urban area populations
Source: and Wikipedia
Quiz by CringeDragon
Last updated: May 9, 2020
First submittedMay 2, 2020
Times taken315
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Level 70
May 2, 2020
TFW you get Manchuria, Caspian Sea, Dallas-Fort Worth suburbs and Brazilian Amazon Basin

I got 2 :(

Level 58
May 3, 2020
How many regions have u used in total?
Level 71
May 3, 2020
Level 71
May 3, 2020
"Pacific Northwest" is not at all clearly defined. I got none of them because I was trying to find towns in the NW Pacific - not the Pacific coast of N. America!
Level 71
May 3, 2020
The Pacific Northwest exclusively refers to "a geographic region in western North America bounded by the Pacific Ocean to the west and (loosely) by the Rocky Mountains on the east" (Wikipedia); in fact, Wikipedia doesn't even have a disambiguation page for it. If I was referring to the Northwest Pacific (a region which is much less defined than the Pacific Northwest), I would've said Northwest Pacific.
Level 66
May 9, 2020
Mississauga is spelled incorrectly
Level 73
Dec 10, 2020
Batam is not in Sumatra