Final answer:
A successful revolution depends on the unity of the people, the widening gap between expectations and reality, and the involvement of those with more power. Examples include the American Revolution, the Arab Spring, and the Occupy Wall Street movement.
Step-by-step explanation:
A successful revolution depends on several factors. One key factor is the unity of the people against a common enemy. In the case of the American Revolution, colonists from diverse backgrounds opposed Great Britain. Another factor is the mood of the people and the widening gap between expectations and reality. When a formerly prosperous population experiences unmet needs and expectations, it can lead to a tipping point where revolution becomes inevitable. Lastly, the involvement of those with more power can contribute to a shift and drive change. For example, the Arab Spring and the Occupy Wall Street movements involved young people who exploited social media to enhance communication and amplify their message.