Final answer:
The provided information does not include specific actions taken by Giovanni Giolitti to seal an alliance with the Socialist Party during his fourth term in office. Giolitti was known for including various social groups in politics, and while there is information on reforms and developments in Italy during his times that aligned with Socialist demands, the exact measures undertaken to form this alliance are not detailed in the provided references.
Step-by-step explanation:
The question about Giolitti's fourth term and his efforts to seal an alliance with the Socialist Party does not have a direct reference in the provided information. However, Giovanni Giolitti was an Italian statesman who became the leading figure in liberal politics in the early 20th century. During his terms, he was known for his attempts to include various social groups in the political process, including socialists, to stabilize Italian politics. We know that during his tenure, he implemented reforms aimed at placating Socialist demands such as labor and social legislation. To maintain stability and encourage industrial development as Mussolini later focused on, Giolitti would have needed the support of the working class, which the Socialists represented.
Unfortunately, due to the lack of direct information regarding Giolitti's specific actions during his fourth term in the data provided, I cannot confidently answer the question regarding his precise actions to seal an alliance with the Socialist Party.