Answer:
Explanation:
In the late 1800s, workers organized unions to solve their problems. Their problems were low wages and unsafe working conditions. First, workers formed local unions in single factories. These unions used strikes to try to force employers to increase wages or make working conditions safer
They made Channels underground a lined with clay to prevent sepage in the surrounding soil. They were a big contribution and we still do something inspired by that today.
"Reconcentrados" for Cuban rebels can be linked to Commander Valeriano Weyler. So your answer is B. Hope this helped! :)
~Shadow
Disgrace is the answer for this
