Read the definitions carefully and select the correct words.
1. something that is available is able to be used or can easily be bought or found
2. to refuse to accept that something is right, fair, or legal
3. to state that something is true, even though it has not been proved
4. a period of 10 years
5. to grow or change into something bigger, stronger, or more advanced, or to make someone or something do this
6. the process of gradually becoming bigger, better, stronger, or more advanced
7. if someone discovers a new place, fact, substance etc, they are the first person to find it or know that it exists
8. a fact or thing that someone finds out about, when it was not known about before
9. an organized journey for a particular purpose
10. to obtain or achieve something you want or need
11. political freedom from control by the government of another country
12. an independent country is not governed or controlled by another country
13. to make, design, or think of a new type of thing
14. the action of inventing something, typically a process or device
15. a man who rules a country because he is from a royal family
16. to be in charge of an organization, country, or team, or a group of people who are trying to do something
17. the person who directs or controls a group, organization, country etc
18. the system in which a country is ruled by a king or queen
19. relating to or involving the nucleus of an atom
20. a building where electricity is produced to supply a large area
21. the official leader of a country that does not have a king or queen
22. the son of a king, queen, or prince
23. a close female relation of a king and queen, especially a daughter
24. the female ruler of a country
25. to let someone go free, after having kept them somewhere
26. a country governed by elected representatives of the people, and led by a president, not a king or queen
27. relating to or belonging to a king or queen
28. to have the official power to control a country and the people who live there
29. an idea or set of ideas that is intended to explain something about life or the world, especially an idea that has not yet been proved to be true