Which of the following was not a disadvantage to the central powers during world war i?
a. the treaty of brest-litovsk
b. the british naval blockades
c. the american expeditionary force
d. the second battle of the marne

a. the treaty of brest-litovsk.

The treaty of Brest-Litovsk was signed between the Russian government (now made up of Bolsheviks) and the Central Powers (German Empire, Austria-Hungary, Bulgaria, and the Ottoman Empire). It effectively ended Russia's participation in the war, as they agreed to stop further invasion. The change of government was the motivation, as Soviet Russia defaulted on all of Imperial Russia's commitments to the Allies. It also ceded hegemony over the Baltic Seas to Germany, ceded the province of Kars Oblast to the Ottoman Empire and recognized the independence of Ukraine. However, the treaty was annulled by the Armistice of November 11, 1918.

answer: c  

the factory goes out of business, causing the workers to lose their jobs.

explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.