Economically, the population decrease brought by the Columbian Exchange indirectly caused a drastic labor shortage throughout the Americas, which eventually contributed to the establishment of African slavery on a vast scale in the Americas.
A.) Income, Lifestyles, and Beliefs. The rest don't make sense.
Answer:
The Strait of Dover is considered the busiest shipping route in the world. The strait in the narrowest part of the channel between England and France sees between 500 and 600 ships pass through daily. The picture below shows some of the other key shipping lanes around the world.
Explanation: