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aalyn [17]
3 years ago
12

The most important invention of the late 1900s and why?

History
2 answers:
borishaifa [10]3 years ago
8 0

Answer:

There's a lot. here are some examples:

Explanation:

1901 : Vacuum cleaner.

1902 : Air conditioning; automated tea maker.

1903 : Electrocardiogram; first powered flight.

1904 : Radar; tea bags; diodes.

1905 : Plastic; windscreen wipers; silencer for guns.

1906 : Radio broadcasting.

1907 : Electric washing machine.

iris [78.8K]3 years ago
5 0

Answer:

the escalator

Explanation:

because it allowed people who where tired from walking to rest while they were going up the steps

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