Answer: The Berlin Conference of 1884–85, also known as the Congo Conference regulated European colonization and trade in Africa during the New Imperialism period and coincided with Germany's sudden emergence as an imperial power.
The correct answer is the second one
<span>Charles A. Beard, an American historian of the early 20th-century, used those exact words in his most famous work, 1913's An Economic Interpretation of the Constitution of the United States. In this book, he argued that the Constitution was crafted mainly because the founding fathers of the country were invested in protecting their own financial holdings.</span>
A Historian would look for a primary source (option d. ) - the definition of a primary source is that it was written at the time of the event, and not later (this is the secondary choice).
