A) A turning point in the Civil War.
President Lincoln used ethos in, "<span>I, ABRAHAM LINCOLN, President of the United States of America, and Commander-in-Chief of the Army and Navy.." to proclaim his justification and position for his Emancipation Proclamation for the legitimate action rather than just advocation for it.
For such an issue, the highest office in the country needed to act in such a way.</span>
I believe the answer is: Gaining control of Paris and forcing a change in the monarchy.
The revolutionaries planned to do this by eliminating Charles X , (who succeeded king louis after he was executed by his own people) . Eliminating Charles X from the government marked the end of monarch system in France, and changed it to popular sovereignty. Leaders of france was elected through democratic election after this event.