Compare the contributions of presidents Abraham Lincoln, Theodore Roosevelt, Harry Truman, and George W. Bush during their terms of office. Be sure to include important historical events and how each president used the powers of his office in order to respond to them.

Explanation:

Abraham Lincoln built the Republican Party into a strong national organization. Further, he rallied most of the northern Democrats to the Union cause. On January 1, 1863, he issued the Emancipation Proclamation that declared forever free those slaves within the Confederacy.  In his planning for peace, the President was flexible and generous, encouraging Southerners to lay down their arms and join speedily in reunion.

On Good Friday, April 14, 1865, Lincoln was assassinated at Ford’s Theatre in Washington by John Wilkes Booth, an actor, who somehow thought he was helping the South.

Theodore Roosevelt established Crater Lake National Park in Oregon in 05/22/1902. TR plays a key role in settling the Anthracite Coal Strike in 10/1902. The prospect of coal shortages in the winter months loomed, and TR decided that public interest demanded vigorous executive action. Roosevelt summoned union leaders and mine operators to the White House, a significant gesture for both his presidency and for the development of his reform program, known as the “Square Deal.” The coal strike ended on October 21. Roosevelt proclaims Pelican Island, Florida, as the first federal bird reservation. Roosevelt establishes the National Forest Service in 21/1/1905.

Harry Truman's initial months in office, the war in Europe ended when the Allies accepted Nazi Germany’s surrender on May 8; the United Nations charter was signed; and the president participated in the Potsdam Conference to discuss postwar treatment of Germany with Great Britain’s Winston Churchill (1874-1965) and the Soviet Union’s Joseph Stalin (1878-1953). In an effort to end the war in the Pacific and prevent the massive U.S. casualties that could result from an invasion of Japan, Truman approved the dropping of atomic bombs on the Japanese cities of Hiroshima (on August 6) and Nagasaki (on August 9). Japan’s surrender was announced on August 14, 1945; however, Truman’s use of the atomic bomb continues to be one of the most controversial decisions of any American president. The president supported the creation in 1949 of the North Atlantic Treaty Organization (NATO), a military alliance of democratic nations, including the United States, Canada, France, the United Kingdom and eight other countries, and appointed Dwight Eisenhower (1890-1969) as its first commander.

George W. Bush, the last of the World War II presidents—he volunteered to fight in the conflict, and began his career in public service as a decorated fighter pilot—was also a somewhat unlikely herald of the modern brand of political celebrity

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34