The Three Emperors League in 1872 was between Alexander II of Russia, William I of Prussia, and Francis Joseph of Austria-Hungary.
The agreement was renewed in 1881 with Alexander III replacing Alexander II of Russia. William I and Francis Joseph remained as signatories.
Answer:
It appears that you are talking about the Middle Ages so the answer is 'C'. Irrigation goes back to pre-history and the fertile crescent.
Explanation:
Because it can be very reliable
C. 250 years (I believe )
The Great Depression hit Germany hard. The impact of the Wall Street Crash forced American banks to end the new loans that had been funding the repayments under the Dawes Plan and the Young Plan. The financial crisis escalated out of control and mid-1931, starting with the collapse of the Credit Amstel in Vienna in May.This put heavy pressure on Germany, which was already in political turmoil. With the rise in violence of Nazi and communist movements, as well as investor nervousness at harsh government financial policies.