Europe's agricultural sector is in general highly developed. The process of improving Central Europe's agriculture is ongoing and is helped by the accession of Central European states to the EU. The agricultural sector in Europe is helped by the Common Agricultural Policy (CAP), which provides farmers with a minimal price for their products and subsidizes their exports, which increases competitiveness for their products. This policy is highly controversial as it hampers free trade worldwide (protectionism sparks protectionism from other countries and trade blocs: the concept of trade wars) and is violating the concept of "fair trade".