Which factor keeps invaders out of Arabia ?
What are your choices and which would be your choice (so we can evaluate your response)?
The factor that historically kept invaders out of Arabia is the region's harsh and inhospitable desert environment. The Arabian Peninsula is mostly covered by the vast Arabian Desert, known as the Rub' al Khali or "Empty Quarter." This desert, composed of barren sand dunes, extreme heat, and a lack of water sources, has acted as a natural barrier, making it difficult for foreign armies to traverse and sustain themselves in the region.
To find this answer, you can begin by researching the geography and history of Arabia. Look for information on the Arabian Desert and its impact on the region's defenses. Historical accounts of invasions or attempted invasions of Arabia can offer further insights into the role of the desert in repelling invaders. Additionally, studying the tactics and strategies of invading armies and how they were affected by the desert environment can provide a comprehensive understanding of the factor that deterred many invaders from conquering Arabia.