Question

2. Name two units used in ancient times, along with their definitions.
3. What is the main advantage of using standard units? Name one system of standard units.​

Answer 1

Answer:

there war 2 subtract and add

Answer 2

Explanation:

2 historically units defined by the movement of astronical objects. Sun based: the year was the time for the earth to revolve around the sun. year based units include the olympiad (four years) the lustrum (five years) the indication

(15years) the decade, the century, and the millenium.