Answer:
One of the negative consequences of the Alliance system in Europe before World War 1 was that it created a complex web of interlocking military agreements that made it difficult to contain conflicts between individual nations. The system of alliances was designed to provide security and deter aggression, but it also had the unintended consequence of bringing multiple nations into a war if any one member of an alliance became involved in a conflict.
The Alliance system contributed to the escalation of tensions between nations, with each alliance trying to maintain its military superiority and strategic advantage. This led to an arms race and an increasing focus on military preparedness, which in turn increased the likelihood of war.
Furthermore, the Alliance system created a sense of rigidness and inflexibility in the diplomatic relationships between nations, making it difficult for countries to negotiate and resolve conflicts peacefully. Instead, disputes between nations were often settled through military means, as each alliance felt obligated to defend its own interests and those of its allies.
The complex and interconnected Alliance system ultimately contributed to the outbreak of World War 1, as a chain reaction of events led to multiple nations becoming involved in the conflict, dragging many more into the war. The devastating consequences of the war, including millions of deaths and widespread destruction, highlighted the dangers of the Alliance system and the need for a more effective means of resolving conflicts between nations.