How has Islamic culture had an impact on global culture?

At the beginning of wwii, what action by winston churchill influenced hitler’s strategy?

Match the following: 1. empirical the belief that an idea should be evaluated based on how it works 2. fundamentalism knowledge based on observation and experiment rather than theory 3. obtrusive to intentionally force ideas or intrude on others 4. pragmatism not religious or spiritual in nature 5. secular a religious doctrine that emphasizes a return to rigid principles

When conducting research for forming a hypothesis, which practice should historians follow?