There is not an exact single "national Brazilian cuisine", but there is an assortment of various regional traditions and typical dishes. This diversity is linked to the origins of the people inhabiting each area. For instance, the cuisine of Bahia is heavily influenced by a mix of African, Indigenous, and Portuguese cuisines. Chili (including chili sauces) and palm oil are very common. In the northern states, however, due to the abundance of forest and freshwater rivers, fish, fruits and cassava (including flours made of cassava) are staple foods. In the deep south, as in Rio Grande do Sul, the influence shifts more towards gaúcho traditions shared with its neighbors Argentina and Uruguay, with many meat-based products, due to this region's livestock-based economy; the churrasco, a kind of barbecue, is a local tradition.