Final answer:
The author's inclusion of the 'Reactions to a troubled world' section is to show how post-World War I effects contributed to World War II, emphasizing the Treaty of Versailles and economic struggles during the Great Depression as key factors. Franklin Roosevelt's role in aid to Britain is noted through the Lend-Lease plan.
Step-by-step explanation:
- The author includes the section "Reactions to a troubled world" to show how several effects of World War I led to World War II. This section helps illustrate that the Treaty of Versailles and the Great Depression had lasting impacts that fueled discontent and contributed to the rise of fascist leaders.
- Question 2 suggests that the Great Depression exacerbated the desire of Americans to focus internally and remain isolated from European conflicts, reflecting an interest in domestic affairs over international ones.
- The third question about Roosevelt's Four Freedoms Speech likely includes this information to outline his principles for justifying American involvement in World War II, framing the speech as a moral groundwork for eventual participation in the war.
- As for the fourth question, Franklin Roosevelt is the American President who came up with the Lend-Lease plan to assist Great Britain during the war.
- Lastly, the main event described in the article is the buildup to America's involvement in World War II. Causes include the economic hardships brought on by the Great Depression, which prioritized domestic recovery over international intervention, and the aggressive actions of fascist leaders like Hitler, which were initially met with appeasement by European powers. These actions, along with violations of the Treaty of Versailles, sowed the seeds for further conflict.