Answer:
In a dramatic speech to a joint session of Congress, President Harry S. Truman asks for U.S. assistance for Greece and Turkey to forestall communist domination of the two nations. Historians have often cited Truman's address, which came to be known as the Truman Doctrine, as the official declaration of the Cold War.
Explanation: umm i tried my best to explain it um hope you understand this XD
Answer:
Abraham Lincoln is elected the 16th president of the United States over a deeply divided Democratic Party, becoming the first Republican to win the presidency. Lincoln received only 40 percent of the popular vote but handily defeated the three other candidates: Southern Democrat John C. Breckinridge, Constitutional Union candidate John Bell, and Northern Democrat Stephen Douglas, a U.S. senator for Illinois
Explanation:
The answer is A, natural selection.
Ottoman empire and austro-hungarian empire. both split after the war forming some new countires.