The correct answers to these open questions are the following.
You did not include the evidence from today's lesson. However, we can answer in general terms.
1) How does citizens' happiness cause change?
Happy citizens cause changes because they have positive energy and they are always in the right kind of mood to be respectful and tolerant. Other people can see their conduct and behavior and realize that happiness is a true option, instead of living in a permanent bad mood, complaining about everything.
2) In your opinion, which CAUSES had the biggest influence on how Hitler and the Nazis rose to power in Germany.
Before the arrival of Adolph Hitler as the leader of Germany, the nation was suffering from the economic consequences and the pain of World War 1. Poverty, political turmoil, and a desperate nation needed a strong leadership that could take rule over Germany and took it back to prosperity. Hitler had the knack and the skills to make people trust in him and they followed.