Because people started associating violence with those unions
Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.
Answer:
B. the Tigris River and the Euphrates River
Explanation:
the region's semiarid climate didn't have much rainfall, with less than ten inches annually. This initially made farming difficult. the Tigris and Euphrates provided a source of water that enabled wide-scale farming.
