I want to say the answer is C , if not it is A.
At first, the view by the Department of War<span> Ordnance Department was that soldiers would waste ammunition by firing too rapidly with repeating rifles, and thus denied a government contract for all such weapons. (They did, however, encourage the use of carbine breechloaders that loaded one shot at a time. Such carbines were shorter than a rifle and well suited for cavalry.)</span>[8]More accurately, they feared that the armies logistics train would be unable to provide enough ammunition for the soldiers in the field, as they already had grave difficulty bringing up enough ammunition to sustain armies of tens of thousands of men over distances of hundreds of miles. A weapon able to fire several times as fast would require a vastly expanded logistics train and place great strain on the already overburdened railroads and tens of thousands of more mules, wagons, and wagon train guard detachments. The fact that several Springfield rifle-muskets could be purchased for the cost of a single Spencer carbine also influenced thinking.[9]<span> However, just after the </span>Battle of Gettysburg<span>, Spencer was able to gain an audience with President </span>Abraham Lincoln<span>, who invited him to a shooting match and demonstration of the weapon on the lawn of the </span>White House<span>. Lincoln was impressed with the weapon, and ordered Gen. </span>James Wolfe Ripley<span> to adopt it for production, after which Ripley disobeyed him and stuck with the single-shot rifles.</span>[1]<span>[10]</span>
Explanation:
Russia entered World War I in the three days succeeding July 28, 1914 — beginning with Austria-Hungary's declaration of war against Serbia, a Russian ally. Via St Petersburg, the Russian Empire sent an ultimatum to Vienna warning Austria-Hungary not to attack Serbia. Following the invasion of Serbia, Russia began to mobilize its very large reserve army. Consequently, on July 31, the German Empire in Berlin demanded Russian demobilization. There was no response; hence, on the same day, Germany declared war on Russia. In accordance with its war plan, Germany ignored Russia and moved first against France by declaring war on August 3, and by sending its main armies through Belgium to surround Paris. The threat to France caused Britain to declare war on Germany on August 4. The main belligerents had been established. (The Ottoman Empire soon joined the Central Powers and fought Russia along their border.)
Historians researching the causes of World War I have emphasised the role of Germany and Austria-Hungary. Scholarly consensus has typically minimised Russian involvement in the outbreak of this mass conflict. Key elements were Russia's defence of Orthodox Serbia, its pan-Slavic roles, its treaty obligations with France, and its concern with protecting its status as a great power. However, historian Sean McMeekin has emphasised Russian plans to expand its empire southward and to seize Constantinople as an outlet to the Mediterranean Sea
