What did the First Battle of the Marne force Gemany to do? a. Go all in on unrestricted submarine warfare.
b. Abandon the Schlieffen Plan.
C. Surrender to the Allies and accept the Treaty of Versailles.
X d. Go all in on the Schlieffen Plan.

B abandon the Schlieffen plan

Explanation:

the Schlieffen plan was the german plan of being able to fight a war of two fronts. With the defeat at the first battle of the Marne, Germany was forced to abandon the Schlieffen plan no longer being able to withstand the pressure from both sides.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

answer; i believe that the correct answer is (c) arctic tundra;