What do the events in the list have in common? Increased coal mining
Increased petroleum refining
Development of the Bessemer process
Development of the incandescent light bulb

answer; i had to look this up and the only one i found was(last only 15 minutes) plz check first and good luck;

hey,

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the correct answer is :

{b.}   ( american workers lose job opportunities )

hope this : )

    -sprinkles

answer; i believe the correct answer is prefrontal cortex;

i truly dont know the answer wait i do its 1,3,4