this is how I feel about them:
French: Vanilla, Civet, Rose, Lavender . Warm and animalic
Italian: Herbs, Neroli, Bergamot, Orange . Bracing and ballsy.
British: Conifers, Lavender, Sandalwood . Invigorating and Soothing
Arabian: Saffron, Oud, Rose, Jasmin, Resins - "exotic" luxurious "medicinal"
I have no associations with american fragrances.