Question

In which of the following industries did Andrew

Carnegie work? Check all of the boxes that apply.
The Pennsylvania Railroad
Oil refineries
Bridge construction

Answer 1

The Person above is correct ! And thankfully they actually put all the questions instead of just one part of the three.

Step-by-step explanation:

E D G E

Answer 2

The Pennsylvania Railroad, Bridge construction

steel,stel,steal,stele,stel,stiel

He invested in new technology.

Step-by-step explanation: