In the late 1800s and early 1900s, what invention made it possible to build very tall buildings?

The elevator.

Explanation:

There were many inventions between 1800 and 1900 but the elevator is referred to build very tall buildings.

For example Mr. Werner   Von Siemens fabricated the first electric elevator but in  1889 the first commercially successful electric elevator was erected.

The 19th century was a great time for inventions.

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