Answer:
The most important areas of Greek achievement were math and science. They achieved all kinds of things in the areas of psychology, astronomy, geometry, biology, physics, and medicine.
Answer: The Siege of Vicksburg was a great victory for the Union. It gave control of the Mississippi River to the Union. Around the same time, the Confederate army under General Robert E. Lee was defeated at the Battle of Gettysburg. These two victories marked the major turning point of the Civil War in favor of the Union.
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I believe that is going to be #'s 2 and 3
