what actions on the part of Germany and Italy created conflict and lead to request for the league of nations to intervene?

The League of Nations were a group of numerous nations created by President Woodrow Wilson to try to keep the peace. Although the League of Nations was a great idea, it did not work as expected. It was very weak and held no real power, along with this, the larger countries would very easily overpower the smaller ones. Since the League of Nations did not have any real power or even troops, it was eventually abolished.

Now that you have background to what the League of Nations were, we can take a deeper look at your question.

During the 1940s and the rise of World War II, Germany and Italy wanted to conquer more land. This made them start invading smaller countries to try to overpower them, many of these small countries were members of the League of Nations. This finally lead to the request for the League of Nations to intervene and try to stop Germany and Italy from taking over these countries. Many of the League of Nations were swallowed by the Axis powers and since they were very weak and powerless, could not really do anything about it. This caused the League of Nations to dismantle and a little while later, finally create the United Nations, which was much more powerful and held actual potential.