Sultan Mehmed II transferred the capital of the Ottoman Empire from Edirne to Constantinople. Constantinople was transformed into an Islamic city: the Hagia Sophia became a mosque, and the city eventually became known as Istanbul.
The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.
Climate and geography divided the new colonies into three separate regions: New England, Middle colonies, and Southern colonies. New England: hilly terrain with rocky soil and jagged coastlines, moderate summers, long, cold winters.
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"A. Invading Iraq would divert attention and resources from the goal of destroying al-Qaeda." describes the arguments that were made against President Bush's decision to invade Iraq in 2003.
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The romans had better weapons than most of the other armies
