A Deere X700, which is made in Horicon, is a <100HP tractor. They are real tractors with an optional PTO and 3-pt hitch. No tractor in the world is entirely made by a single company. For starters they all have various semiconductors in them and no tractor company owns a fab that I am aware of.
Deere engineers in Augusta design their current CUTS, they are built there and tested there. Yes, they use parts from many suppliers.
You can get a PTO and 3-point on a telehandler, doesn't make it a tractor. What you're talking about there is a riding lawn mower.
I also didn't say that there's any company that makes all their parts in-house. Just that you can't find one made in America despite a fair bit of advertising that leans that way.
I have a fair idea of what I'm talking about. On our property we have a Ferguson TE-20(a tractor that was all made in one country), Ford 1500(which is a joint venture between New Holland, Shibaru and licensed by Ford) and a Kubota L4760(in-house engine development).
Deere engineers in Augusta design their current CUTS, they are built there and tested there. Yes, they use parts from many suppliers.