inventions
Before this invention, people had to wash every piece of clothing by hand and scrub it against a rock or board.
A washing machine spins and cleans clothes today, using spinning motion with water and soap to lift dirt from fabric, saving hours of scrubbing clothes by hand against a rock or washboard.
A trampoline is just for bouncing, and an umbrella keeps rain off a person, neither has anything to do with washing clothes.
Before electric machines, people used hand-cranked drums, and before that, communities gathered at rivers or shared washhouses to scrub clothes together, turning a chore into a social event.
inventions
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