History of the holocaust the united nations has intervened, often with limited success, in which area? bosnia. the drc. rwanda. the sudan. all of these locations.

All of these locations.

Explanation:

The United Nations´ troops, often recognized by their blue-helmets, have 78,000 soldiers and 25,000 civilians distributed over several countries, in many cases becoming the primary enforcers of the order, instead of the police and government soldiers.  

For example:

The United Nations Advance Mission in the Sudan (UNAMIS) and the United Nations Mission in the Sudan (UNMIS).

The United Nations Assistance Mission for Rwanda (UNAMIR)

The United Nations Mission in Bosnia and Herzegovina (UNMIBH)

The United Nations Observer Mission in the Democratic Republic of the Congo (MONUC)

35 is your answer because i looked it up

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).