European Union law is a body of treaties and legislation, such as Regulations and Directives, which have direct effect or indirect effect on the laws of European Union member states. The three sources of European Union law are primary law, secondary law and supplementary law. The main sources of primary law are the Treaties establishing the European Union. Secondary sources include regulations and directives which are based on the Treaties. The legislature of the European Union is principally composed of the European Parliament and the Council of the European Union, which under the Treaties may establish secondary law to pursue the objective set out in the Treaties.

European Union law is applied by the courts of member states and the Court of Justice of the European Union. Where the laws of member states provide for lesser rights European Union law can be enforced by the courts of member states. In case of European Union law which should have been transposed into the laws of member states, such as Directives, the European Commission can take proceedings against the member state under the Treaty on the Functioning of the European Union. The European Court of Justice is the highest court able to interpret European Union law. Supplementary sources of European Union law include case law by the Court of Justice, international law and general principles of European Union law.

Now, provide a numbered list of answers to these questions:

1. Is the European Union law a body?
2. of what?
3. How many sources of EU law are there?
4. What is one?
5. Any others?
6. What is another one?
7. What is primary law?
8. What are secondary sources?
9. Does the EU have a legislature?
10. How many bodies make up the legislature?
11. What are these?
12. Do they establish secondary law?
13. Is the law applied by courts?
14. What are Directives?
15. Is there a highest court?
16. What do they do?
17. What is an example of a supplementary source of EU law?
18. Any others?
19. What is one?
20. What is another?

Numbered answers:
1. yes
2. of treaties and legislation
3. Three
4. primary law
5. yes
6. secondary law
7. the Treaties establishing the European Union.
8. regulations and directives
9. yes
10. Two
11. the European Parliament and the Council of the European Union,
12. yes
13. yes
14. law which should have been transposed into the laws of member states,
15. he European Court of Justice
16. interprets European Union law
17. case law by the Court of Justice,
18. yes
19. international law
20. general principles of European Union law.