Answer: Steamboats were used on rivers and lakes for transportation of goods.
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Explanation:
Answer: If they are not complementary, then the light passes through the object or gets reflected.
Explanation:
Two benefits of the Transcontinental Railroad System, was that it provided jobs across the nation, for people, and that it sparked markets across the nation, also. I hope that I have helped and not hindered you. If this has helped, can you please consider marking this answer as the brainliest? I appreciate it!!!
This was not my answer but someone else's. But here it is.