Caterpillar and JOHN DEERe are two US made brands. For road tractors (semi trucks), Freightliner, Western Star, Sterling, Mack, Volvo (US), Peterbilt, and Kenworth are made in the US, although usually not 100%
Freightliner, Western Star, and Sterling are owned by Daimler-Benz. Volvo Trucks USA and Mack are owned by Volvo A.B. of Sweden. Peterbilt and Kenworth are owned by US-based PACCAR, Inc.
They still are.
As long as you buy a name brand Chinese made tractor and not a Gray Market tractor, they are not intended to be used in the US and are hard to find parts for. It is always best to check the warranty and make sure you are covered for a few years.
No
Farmall
with tractor parts
A store that sells a tractor cab is Sears. For example under the topics Lawn and Garden and Tractor attachments, listed is a Craftsman brand Tractor Cab.
Both are made by Shur-Dri.
If you are buying a brand new tractor door, you should expect to pay between 500 dollars and 700 dollars depending on the brand of the tractor. You can also find used doors for under 300 dollars.
Tractors have many features depending on the brand and age of the tractor. Most modern tractors have four foot-pedals to operate the tractor. Pedal tractor have automatic transmissions.
'Kubota' is a name. A Kubota is likely a tractor made by the Kubota Corporation in Japan.
New Balance
I would stick with the same manufacturer's part for yout tractor if necessary. Using a different brand that doesn't match with your current brand can cause worse damages in the long run.