"How did the building of alliances through diplomacy contribute to the American victory?" (3-4 sentences/1-2 minutes)

In a group discussion, which of these is the best example of synthesis claims into a single conclusion?

Why didn’t the united states participate in the league of nations? the u.s. senate did not want the country to join. president wilson did not want the country to join. the league of nations was only for european countries. the league of nations had failed to prevent world war 1

Describe the relations between the united states and other countries under the articles of confederation. 3-4 sentences