Which of the following was one of the effects of irrigation that was developed as a new technology from 5000 to 3000 BCE?
A. It reduced the salt content in the soil.
B. It involved changing the unmanaged ecosystem into a managed system.
C. It prevented all types of waterlogging.
D. It lowered the water table under the soil, improving the drainage system.
B. It involved changing the unmanaged ecosystem into a managed system.
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The most celebrated foreign policy accomplishment of Theodore Roosevelt's presidency was the construction of the ________.
Fill in the blank(s) with the appropriate word(s).
Founded in 1919 by white Methodist minister Will W. Alexander, the Commission on Interracial Cooperation denounced all of the following EXCEPT
a. segregation. b. debt peonage. c. disenfranchisement. d. mob violence.
Since the 1850s until the 1880s, most American newspapers were
A. independent of political influence. B. focused exclusively on scandal. C. aligned with one of the major political parties. D. committed to representing both sides of issues.
The Treaty of Verdun in 843
A) established peace with the Spanish caliphate. B) divided the Carolingian empire. C) reunited the Catholic and Orthodox churches. D) created the Papal States. E) ceded land to a party of Vikings.