I think the answer for your question is 961,121.
Causes of the American Revolution were that the British Government set taxes on goods for the American Colonies to pay without the consent of the American people themselves. The Result was that the American Colonies gained independence for the British Empire.
During World War I, the German Empire was one of the Central Powers that lost the war. It began participation in the conflict after the declaration of war against Serbia by its ally, Austria-Hungary.
Answer:
1. Observations
2. Hypothesis
3. Experimentation
Explanation:
Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.