The introduction of the "four field rotation" in agriculture had what effect during the Industrial Revolution? A) It prevented countries from needing acquire imperial territories.
B) It limited the use of water and increased the need for fertilizers.
C) It failed to result in significant advances, causing mass starvation.
D) It allowed for greater yields on farmland and prevented soil depletion.

After world war 1 immigration was based on

Which kind of map you would be used to show population density in the countries of the world

Why was it decided in potsdam that certain industries in germany would be disabled? a. to deplete resources that might prevent germany from coming to power again b. so that a portion of the eastern region of poland would be fused together with the soviet union c. to allow the allies to focus their war efforts in fighting the last part of the war against japan d. to provide economic aid for iran's government since large war demands were made on them