In the early 1900s, englishman abraham darby invented a quicker, easier way
to produce cast iron, in the 1850s, british engineer henry bessemer
developed the first inexpensive process for mass producing steel. these two
events are an example of which type of relationship?

These two events are an example of Correlation.

A.Correlation

Explanation:

The development of Henry Bessemer's invention was made possible only because of Abraham Darby's invention. Abraham Darby's invention was the cast iron so the cast iron is important for making the steel production . so the invention of Abraham Darby is important for the Henry Bessemer invention.

Because of this, both the  inventions are only correlated with one another since they do not form a cause and effect relationship between them. The cast iron is the basement of the steel production.

d

step-by-step explanation:

look at the x and y axis

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