Question

what was a major catalyst for world war i?
treaties that forced many countries to get involved if an alliance member was attacked.
european countries invading each other for land.
empires granting their colonies independence, leaving them to fend for themselves.
unrest of the poor and oppression of the weak would be major issues prompting world war i.

Explanation:

The assassination of Franz Ferdinand was the immediate trigger, but the interconnected alliance treaties forced most major European powers to join the conflict once the first declarations of war were made, turning a regional crisis into a global war. The other options are incorrect: European powers were competing for colonies/land but this was a long-term cause, empires were not granting colonies independence at this time, and class unrest was not the major catalyst for WWI.

Answer:

A. Treaties that forced many countries to get involved if an alliance member was attacked.