The answers are Gross domestic product
Quality of life
And literature
Absolutely random question, but I would use a large hammer and smash my rock to piece. :/
Answer:
United States customary units form a system of measurement units commonly used in the United States and U.S. territories since being standardized and adopted in 1832. The United States customary system developed from English units which were in use in the British Empire before the U.S. became an independent country.
Explanation
<em>The US customary system includes units for measuring length, weight, capacity, area, volume, and temperature.</em>
7 there are seven continents total