Answer:
Alliances made nations over confident and reckless. They emboldened leaders to act recklessly. Leaders knew that if they did declare war, powerful allies were obligated to fight along with them. (No country wanted to be seen as an unreliable partner.)
Explanation:
The one that would unite the union
Hey there,
The first question it would be - Fall of Constantinople
The second question - Hundred years' of war
The third question would be - Italian wars
Hope this helps :))
<em>~Top♥</em>