I am pretty sure that the action which President Polk took that resulted in the war between the United States and Mexico is He sent General Zachary Taylor to claim an area of disputed land for the United States. Actually, this is the major step which led to the war between the United States and Mexico. Do hope you still need the answer because this one is really helpful!
Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "Darwin's methods," since this is the "umbrella" under which the other topics lie. </span>
The Clayton Antitrust Act is an amendment passed by U.S. Congress in 1914 that provides further clarification and substance to the Sherman Antitrust Act of 1890. The Act focuses on topics such as price discrimination, price fixing, and unfair business practices.