Answer:
Istanbul
Explanation:
The capital was Constantinople, it was renamed Istanbul.
Slavery was the most significant cause of the controversy

The Silk Road was important because it helped to generate trade and commerce between a number of different kingdoms and empires. This helped for ideas, culture, inventions, and unique products to spread across much of the settled world.
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Answer: Republican nominee Ronald Reagan defeated incumbent Democratic president Jimmy Carter in a landslide victory. This was the second successive election in which the incumbent president was defeated, after Carter himself defeated Gerald Ford four years earlier in 1976.
Explanation: