<span>a. European industries struggled. - no, this was not the effect, but a reason for it.
b. Trade expanded between a number of nations. - yes, it did. It strengthened the industries in the countries, which lead to a better trade.
c. Unemployment rates increased across the board - no, rather decreased
d. The Soviet Union eventually took part in the plan.
-no, they never did. </span>
The appropriate answer is B. steam boats could travel against the current on a river. This statement means that steam boats could travel upstream. The steam engine in steam boats allowed them to travel upstream possibly against a strong current. Sail boats rely on wind or the downstream flow of the water to move it from one location to the other. The invention of the steamboat revolutionised transportation of goods and people on large navigable rivers.
Answer:
The century art in Europe
In the history of Europe, the Middle Ages (or medieval period) lasted from the 5th to the 15th century. It began with the fall of the Western Roman Empire and merged into the Renaissance and the Age of Discovery.