The Truman Doctrine basically said that America would provide help even military help to any country that was under threat of being taken over by communism. By contrast, the Marshall Plan provided aid in the form of food and money to countries in Western Europe whether they were being threatened by communism or not.
Leonardo da Vinci (1452-1519) is considered the worlds greatest genius or the ultimate Renaissance man (someone good at everything). He was an Artist, Inventor, and Scientist whose famous works range from the Monalisa, The Last Supper, and the Vitruvian during the Italian Renaissance. Leonardo made an immense contribution to the study of medicine, science, and art with a voice of reason, logic, and science in a world of superstitions.
Contributions to art
He excelled in drawing, painting, and sculpture, the Monalisa and The last super are among his most famous.
Inventor and Scientist
Leonardo's journal was filled with over 13000 pages of how he observed the world and drew pictures and designs of helicopters, war machines, musical instruments, and hang gliders.
He studied the human body and drew muscles, tendons and the human skeleton. He also had detailed pictures o the heart, arm and other organs.
Answer:
Abraham Lincoln's election
Slavery
State's Rights
White House Chief of Staff