Answer:
The website/book/place where you found the information. The materials you use to do something.
Explanation:
Basically, the things you used to create something
Supreme Law
The constitution is the supreme law of the land.
Answer:
The answer is the second one
in the three months to February 2017 there were 33.4 million people in the UK labour force and 1.56 million people classed as unemployed. These figures gave an official UK unemployment rate of 4.7%.