In history, the way things are written are usually through a bias, to describe how the event took place, if the source recognizes the event at all. The bias is usually towards the nationalism of the writer, however there are times where the historian will have a differing opinion than what is expected. For example, World War I was believed to be started by the Kaiser Weilheim II of Germany. However, some historians believe that such war was caused by nationalism, imperialism, and militarism. 

Another example would be the Arab-Israeli conflict. Certain events like the Nakba (catastrophe in Arabic) or the 1948 Palestinian Exodus, where approx. 711,000 Palestinian Arabs were removed from their homes. The Palestinians claim they were "forcibly driven out", and therefore the victim of the situation, claiming a bias. 

Even in textbooks, one can find a bias, depending on which history textbook is read. In most American textbooks, America will be seen as "The Hero", or the savior of whatever situation America involved itself in. 

To add to this, is there a neutral language existing at all? When speaking, one does not usually neutrally asses thins because the person viewing the situation posses a natural and subconscious bias that judges the scenario and will per say, some up with a bias on what happened.