Its C. Significant world event.
Labourer is the synonym of the given problem.
Synonym:
It is one of two or more words or expressions of the same language that have the same or nearly the same meaning in some or all senses.
Labourer:
A laborer (or labourer) is a person who works in manual labor types, especially in the construction and factory industries' workforce. Laborers are in a class of wage-earners in which their only possession of significant material value is their labor.
They are the basic pillar in the country development and have a huge impact over the economy of the nation.
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I believe that living in a clean environment is safer. there is a lot of bacteria’s in today’s world that can harm us, zero germs is way better than a bunch of them. it can also make us feel safer or more comfortable.
Answer:
Those technology which were practiced in traditional time is called traditional technology.
Explanation: