Well we know that it is not A or C, Reason: Some states have up to 5m people in it. (For example about 8 live in just new York alone.)
And we also know its not 10 billion. Reason for this: Scientist have proven that there is no more then 8 billion people today.
And so now we got 6.5 billion is the closest, the real number is about 7.5 billion.
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ok since your givng me the answer i just tell you what i found on flipping wikipeida
The reason for the collapse of the state was World War I, the 1918 crop failure and the economic crisis. ... Legally, the collapse of the empire was formalized in the Treaty of Saint-Germain-en-Laye with Austria, which also acted as a peace treaty after the First World War, and in the Treaty of Trianon with Hungary.
It’s D. George Washington is often called the “Father of His (or Our) Country.” He not only served as the first president of the United States, but he also commanded the Continental Army during the American Revolution (1775–83) and presided over the convention that drafted the U.S. Constitution.
Answer:
C. Dollar Diplomacy
Explanation:
Dollar diplomacy of the United States—particularly during President William Howard Taft's presidential term— was a form of American foreign policy.