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Street sweepers may look like a relatively modern invention but they appeared for the first time in the first half of the 19th century. Since then they become unavoidable and important part of many cities. Read more about history of street cleaning and street sweeper.
Before mechanical solutions for cleaning floors, people used brooms but when carpets became common they needed something more efficient. It was too early for technology to sustain vacuum cleaners so it was a perfect time for a carpet sweeper to appear on the scene. Read more about history of carpet sweeper.
Timeline of vacuum cleaners began with industrial revolution and it followed it closely. From mechanical variants over the internal combustion engines to electrical variants and even robots - vacuums changed through time.
Domestic robots, robots we keep at home, are not that uncommon. First ones appeared in the 1980s and were just a little bit more complex toys. Today we have more complex ones that can help us with daily chores like cleaning and mowing.