<span>It was communism that sparked the Truman doctrine. In 1947 the British Government said they could no longer afford to help Greece and Turkey fight communism both economically or militarily. President Truman believing these countries were in a danger of communism then created the Truman doctrine, which was a promise that the USA would do whatever necessary both economically and militarily to prevent communism from spreading.</span>
<span>B. Galileo used his telescope to find evidence that Earth is not the center of the universe. This discovery contradicted the teachings of the Catholic Church, suggesting that religion was not the only guide to truth </span>
