The word could is main word, your welcome
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:
The main idea is the point of the paragraph. It is the most important thought about the topic. The main idea is usually a sentence, and it is usually the first sentence. The writer then uses the rest of the paragraph to support the main idea.
I think it is the 4th one, Not 100% sure.
He tried to run away to his previous master, Thomas, and plead/appeal for help
