I'm sure they are/were, but they were building them for foreign companies.
Henry Ford may have had all those links to different countries, but as far as know, he founded the company in America. The are an American multinational company.
Would you say that Nikon are a UK, USA or European company, because they have all those arms of their Japan originated company.
And Nissan were founded in Japan, again, as far as I know. They may be part, or fully owned by a company from another country,
but they are a Japanese company making Japanese cars, possibly in other countries, but they are Japanese imho.