What influences the cuisine of particular countries?

I would say it's mostly climate, as it determines two things: 1) what can grow/live in a given place and 2) how long can the products be kept

Additionally, it's the closeness to such things as water sources where you can fish and trade routes: a lot of European cuisines include cofee products, even if cofee is not grown in Europe!

Im pretty sure it’s is c

The holy roman empire.