Question

a. to allocate reparations following world war ii.
b. to establish the united nations.
c. to outline international conduct on the battlefield.

Explanation:

To solve this, we analyze each option:

Option a:

Allocating reparations after WWII was related to agreements like the Potsdam Agreement, but the main focus of major post - WWII efforts for global order was not just reparation allocation. The United Nations was established for broader purposes of maintaining peace, promoting cooperation, etc. So this is not the main purpose of the key post - WWII initiative related to global governance we are likely considering.

Option b:

The United Nations was established in 1945 after World War II. Its main purposes include maintaining international peace and security, developing friendly relations among nations, and promoting social progress, better living standards, and human rights. This was a major initiative post - WWII to create a framework for international cooperation and peace.

Option c:

Outlining international conduct on the battlefield is related to the Geneva Conventions, which have a different focus than the major post - WWII initiatives for global order and cooperation like the establishment of the UN. The Geneva Conventions deal with the treatment of civilians, prisoners of war, etc., in times of armed conflict, not the broader post - war global governance structure.

Answer:

b. To establish the United Nations.