Treaty of Nice

Treaty of Amsterdam 

Treaty of Maastricht

the law stemming from the Treaty establishing the European Economic Community could not be overridden by domestic legal provisions of member states

the law stemming from the Treaty establishing the European Economic Community can be overridden by domestic legal provisions of member states

the law stemming from the Treaty establishing the European Economic Community can be overridden by domestic legal provisions of member states only if it is independent source

it introduced new customs duties on imported chemicals

it raised the customs duties on chemicals imported

it raised the price of the chemicals imported

European Parliament

European Council

European Commission

Council of Ministers

Cyprus

Ireland 

Malta

Slovakia

Slovenia

inferior to the national laws

autonomous from the national laws of the member states and the international law

applicable directly