I think they live on the North Pole. So their number equals 0.
The answer is it improved the economy.
explanation: the second and third option are the basically the same just reworded which eliminates those two. if you search that question online, it most of the headings of the articles talk about growth. growth = improvement. leaving the first option as your answer
<span>The Berlin Conference of 1884–85, also known as the Congo Conference (German: Kongokonferenz) or West Africa Conference (Westafrika-Konferenz), regulated European colonization and trade in Africa during the New Imperialism period, and coincided with Germany's sudden emergence as an imperial power.</span>