The industrial revolution made the world a positive some world meaning that was more resources to go around. But most of the resources were produced by the top 1% meaning that the richer got richer and the poor get poor.
"B. The English Channel helped protect the island nation of Britain from invasion" would be the best option from the list, since this Channel was oftentimes very choppy with strong currents.
Almost always, if you are a Group Supervisor working in a branch within the Operations Section then your immediate supervisor would be the "Branch Chief," although sometimes this title can vary.
Germany was the first, in world war 1.
What I can infer from what Lewis and Clark saw when moving west from the Mississippi river is that the landscape along the river changed drasticallly. The forest receded, replaced first by the high prairie and then the shorter grass of the high plains. The temperatures became colder and as they continued their expedition by the river they realized that there was no water route to the pacific ocean, just more mountains.