Internal societal divisions can exacerbate external conflicts in multiple ways. Firstly, leaders might pursue external conflicts to divert attention from internal strife, a concept known as diversionary war theory. For instance, a regime facing domestic unrest might adopt an aggressive foreign policy to rally the nation around a common cause. Secondly, internal divisions can weaken a nation's political cohesion, making it vulnerable to external pressures or interventions. The internal religious and political strife in pre-Reformation Europe, for instance, made it susceptible to external invasions and interferences.

Technological advancements have historically both directly and indirectly influenced the causes of wars. Directly, they've enhanced military capabilities, thus altering strategic considerations. The advent of the machine gun, for example, revolutionised warfare, as did the development of tanks and aircraft. These advancements sometimes embolden nations to pursue aggressive policies. Indirectly, technology affects economic dynamics and competition, as nations race for technological superiority, which often has military implications. The naval race between Germany and Britain, fueled by advances in battleship design in the early 20th century, added tension to an already volatile European political scene.

Cultural perceptions and biases have historically shaped diplomatic relations, political strategies, and even direct confrontations. They often influence how nations perceive threats, allies, and their own roles on the global stage. For instance, during the Age of Exploration, European perceptions of superiority and the 'White Man's Burden' justified colonial conquests and dominance over indigenous populations. Similarly, during the Russo-Japanese War, racial biases influenced European perceptions, with many being stunned by Japan's victory due to prevailing stereotypes of Asian inferiority. Cultural biases can thereby fuel conflicts by skewing diplomatic judgements, justifying aggression, or underestimating potential adversaries.

While immediate causes can be the spark that ignites a conflict, they rarely function in isolation. They are typically manifestations of underlying tensions that have been simmering, often for decades or centuries. An immediate cause might be a dramatic event or provocation that pushes already strained relations over the edge. For example, the assassination of Archduke Franz Ferdinand in 1914 triggered World War I, but the war's roots lay in deeper political, economic, and nationalistic divides. Thus, while an immediate cause might be the visible reason for a conflict's eruption, the groundwork is typically laid by long-term and short-term causes.

Long-term causes offer invaluable insights into the fundamental tensions or dynamics that set the stage for eventual conflicts. They help historians unpack the socio-cultural, economic, and political fabrics of societies and reveal underlying patterns or trends. For instance, the longstanding economic rivalries and colonial ambitions among European powers contributed to the powder keg environment leading to World War I. Understanding these deep-rooted issues provides a backdrop against which short-term triggers and immediate events can be analysed, allowing for a comprehensive understanding of the factors that culminated in war.