Answer:
The Arabian Peninsula plays an important geopolitical role in the Middle East and the Arab world due to its large oil and gas reserves. In fact, about a third of the world's oil reserves are found in this peninsula (more than half if the rest of the Middle East is included), which makes this region one of the main actors at the international macroeconomic level, given the importance of oil for production systems.
In addition, this region is the cradle of the second most followed religion in the world: Islam. In fact, Mecca and Medina, two of the most important cities of this belief, are located within the territory of Saudi Arabia.