The pursuit of the aims of the Common Agricultural Policy (CAP) (agrarian development, adequate living conditions for farmers, balanced markets, the pursuit of self sufficiency in agricultural products and reasonable prices for the consumer), agreed upon at the 1957 Treaty of Rome, is based on the well known principles for the operation of the CAP (unified markets, community preference, economic solidarity), which were themselves set in 1958 and made more specific in the 1960s with particular institutional measures for the production and trade of agricultural products.