Why did people move to Baghdad region by early part of the 8th century?

Center of learning (8th to 9th centuries) Founder, caliph al-Mansur of the Abbasid caliphate, chose the city's location because of its critical link in trade routes, mild climate, topography (critical for fortification), and proximity to water.

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Founder, caliph al-Mansur of the Abbasid caliphate, chose the city's location because of its critical link in trade routes, mild climate, topography (critical for fortification), and proximity to water.

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the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.