Why was the Missouri River important to the Lewis and Clark expedition? The river could be followed by their wagon train, so their horses would have a source of freshwater. The river could be followed by their wagon train, so their horses would have a source of freshwater. , , The river allowed the expedition to travel easily through the territory with their equipment. The river allowed the expedition to travel easily through the territory with their equipment. , , The river was used by American Indians and would provide access to trade along the way. The river was used by American Indians and would provide access to trade along the way. , , The river was famed for its abundance of fish, so they knew the expedition would have enough to eat.

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trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.