It changed because it focused on fighting terrorism in all countries that were considered to be sponsors of worldwide terrorism. Thousands of troops were sent to countries like Iraq, Afghanistan, Syria, and many other places where wars were being fought against terrorist organizations. Everyone supported this and nobody opposed.
The ideas that were central for the scientific revolution and are still central for scientists working around the world is (2) observation and experimentation.
Observing our natural world and doing experiments in it is something that lies at the very core of scientific research.
Do you want to know what they were talking about?
It would be d. persia prevented Sparta and Athens from uniting.
Hoover was an economic conservative, and did not believe in federal intervention in the natural cycles of the economy. It is worth noting that the thought the Depression would be much shorter than it turned out to be. He was also fearful of establishing a permanent situation in which the economy was dependent upon the government, especially with regard to welfare programs.
Hoover's fear was that the country would be permanently weaker if welfare programs were introduced, or if the federal government became overly involved in the banking system. Towards the end of his administration, as the Depression dragged on, Hoover conceded a bit on this point, and introduced some Federal lending programs to bail some financial institutions. The answer is A.