"c. The city became a central hub for trade, which contributed to the empires growth" best describes the effect of Constantine moving the capital to Constantinople, since it was a thriving metropolis.
The correct answer is C. Caravel
They were fast and maneuverable and could go through tough water easier than big sturdy ships and were great for explorers who even wnated to go up and down big rivers into continents when exploring, or pass easily between islands or similar things.
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Your answer would be D. hope that you pass!
Africa's resources were depleted and given to the American Colonies, which hurts their economy up to this day. Also, South America's natural resources were depleted (ie: Aztec gold) which hurt their economy as well. There's probably many more effects but heres one