Improvements to transportation have lowered the costs of shipping goods between countries.
reduced the number of tariffs on shipped products.
raised service fees on shipping goods between countries.
resulted in fewer safety regulations governing shipments.
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c) they were beaten and fired from their jobs.

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united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).