Answer:
In antiquity, systems of measurement were defined locally: the different units might be defined independently according to the length of a king's thumb or the size of his foot, the length of stride, the length of arm, or maybe the weight of water in a keg of specific size, perhaps itself defined in hands and knuckles.
Systems of Measurement: there are two main systems of measurement in the world: the Metric (or decimal) system and the US standard system. ... The US Standard system uses units that have no predictable relationship to each other.
Explanation:
For example, there are 2 cups in a pint, but 4 quarts in a gallon.
Answer:
A root word is a word or part of one, it basically can help you form the new words through the addition of prefixes and suffixes. Because it is the base of the word. Hope this helps! Please mark brainliest :)
Several ways you can determine the validity is
1.) The author and his credentials.
2.) Sources that back up the article/publication.
3.) Whether the article features bias or none, when appropriate.