Test Unit Test
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The replacement of iron with steel in the late 19th century was responsible for the building of the first
skyscrapers.
O True
O False

true

Explanation:

The replacement of iron with steel in the late 19th century was responsible for the building of the first

bibliography and citations to credit the sources hope this you if not my deepest of apologize ^w^

brainliest is someone you pick by simply clicking a button. it only shows up if there are two people that answered your question, then you decide who answer more accurately with detail and explanation and you give that person the title "brainliest".

i hope this your understandings.