Graphed the a system of equations and the solution was no solution

A. The graph showed parallel lines with the same slope

Explanation:

This is the answer because if their is no solution then it automatically is parallel lines with same slope

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industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.