Scientists have determined that this crater was created by a(n) ____. 
Definitions:
Television
A system for transmitting visual images and sound that are reproduced on screens, primarily used for broadcasting programs for entertainment, information, and education.
Mechanization
The process of using machinery and technology to automate tasks and production processes, often leading to increased efficiency and productivity.
Tenant Farmers
Individuals who farm land that is rented from a landowner, reflecting a form of agricultural production and land tenure that has historically varied greatly across different societies and times.
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