Google.ca Why Is Google.com Redirecting Me To Google.ca And Google.uk When I Live In The US?

Why is Google.com redirecting me to Google.ca and Google.uk when I live in the US? - google.ca

I live in the United States and every time I google.com google.ca or send me google.uk. My IP is unique in the U.S. since I did some checking of the IP and show me all the sites in Virginia, as it should. Why not stay on Google.com Google as normal and no other team in the U.S.?