I have been hearing a lot about Seattle in the news lately, but I don't know much about the city.  Is Seattle the capital of Washington state?  
No I believe Olympia is Washington's capital. Seattle is however the largest city in the state of Washington. 
What is the population of Seattle?  I assume several million.
Estimated 713,700 residents. That also makes it the largest city in the Pacific Northwest region of North America.
That's amazing.  Is there anything significant either historically or practically about Seattle?
Seattle has been one of the fastest growing cities in the U.S. It must be great there, since everyone is flocking to it.
Do you know about any significant businesses there?  I know they have a professional football team that blew it in the Super Bowl against the Patriots.
Seattle is the home of Starbucks and Amazon. Two massive companies that started in the seaport city.
I had no idea about Starbucks.  I know Amazon has had some challenges out there with some of the politicians for some reason.
Criticism of Amazon
Amazon.com has attracted criticism from multiple sources, where the ethics of certain business practices and policies have been drawn into question. Amazon has also faced numerous allegations of anti-competitive or monopolistic behavior.
Anti-competitive practices.
Anti-competitive practices One-click patent.
The company has been controversial for its alleged use of patents as a competitive hindrance. The "1-Click patent" is perhaps the best-known example of this. Amazon's use of the one-click patent against competitor Barnes
in the state with a population of over 100,000 (Seattle, Spokane, Tacoma, Vancouver, Bellevue, and Everett) as well as the state capital, Olympia.
Interstate 90 (I-90) is the longest primary Interstate Highway in Washington, which connects Seattle to Spokane and the Idaho border, measuring , while I-82, connecting the Oregon border city of Umatilla to Elensburg via Yakima, is the shortest at . The longest auxiliary Interstate Highway in Washington is I-405, a bypass of Seattle through the Eastside, at , and