The allied nations at the beginning of wwi were a. france, russia, and the united states. b. great britain, france, and russia. c. germany, austria-hungary, and italy. d. russia, germany, and austria-hungary.

 B. Great Britain, France and Russia

Context/explanation:

The military plans laid before World War I presupposed a major war between countries, and the nations of Europe joined together in competing alliances.  The Triple Entente had Britain, France and Russia as allies -- and those nations became known as the Allies in the Great War (now known as World War I).  

Another alignment of nations, the Triple Alliance, consisted of Germany, Austria-Hungary, and Italy.  When the war broke out, Italy changed its allegiance and eventually became part of the Allies.  Germany and Austria-Hungary added Bulgaria and the Ottoman Empire to their side in the war, and were known as the Central Powers.

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.