Where is fiat from?

Fiat originated from Italy, they are also connected to Ferrari.

Battista Pinin Farina that designed the Ferrari also designed the Fiat 124 spider, Lancia

The company itself have no relation other than using the same person to design the cars.

Battista Pinin Farina was employed as a designer by a lot of car makers like Maserati, Rolls-Royce, Cadillac, Jaquar, Peupeot, Alafa Romeo, but there many more.
Italy