The correct answer for the question that is being presented above is this one: "B. mass extinction of land and sea animals." The end of the paleozoic era was signaled by mass extinction of land and sea animals.
Here are the following choices:
<span>A. the development of humans
B. mass extinction of land and sea animals
C. the development of organisms with hard parts
D. both a and b</span>
Answer: With the Truman Doctrine, President Harry S. Truman established that the United States would provide political, military and economic assistance to all democratic nations under threat from external or internal authoritarian forces.
Where are the choices of the thinkers?
Well, after the ending of American Civil War it mean that a lot of cotton exports from America were available once more. There was also a competition in the global market, to supply cotton and that's why it helped keep down the price after 1865
Answer:
Pericles strengthened democracy in Athens by paying public officials. Pericles expanded the empire by building a strong naval fleet. Pericles rebuilt and beautified Athens. Athenian democracy, art, and architecture set standards that remain influential in the world today.
Explanation:
