Answer:
B
Explanation:
Eisenhower attempted to stop the spread of communism during the Cold War (this is called containment). The US feared that if one country started toward communism, other would follow suit.
The correct answer is - Large numbers of migratory birds;
The number of the migratory birds has always been pretty high and it hadn't resulted in the drying up of the Ogallala Aquifer, not to mention that those birds can not even reach that water because it is underground. Also, the number of the migratory birds have been steadily lowering, so even if they were using that water for drinking, it wouldn't have caused the drying out.
The Ogallala Aquifer has started to dry out because of numerous reasons, with the usage of its water for irrigation being the prime reason. The droughts have become longer, and the temperatures little higher, while the rainfall slightly smaller, so all of that affected the reserves of water in the aquifer negatively.
Answer:
The word McCarthyism was formed because of the controversial practises of former US Senator John McCarthy where he made some unconfirmed allegations.
The word McCarthyism means to make an accusation of disloyalty against someone without proof or based on flimsy evidence.
Answer:
Alexander the Great's conquests freed the West from the menace of Persian rule and spread Greek civilization and culture into Asia and Egypt. His vast empire stretched east into India.
The Mississippi river and other western tributaries most notably the Missouri river formed pathways for western expansion.
