Maurya and Gupta dynasties were able to unite India.
Answer:
A. They were extremely precise and successful in every attack.
Explanation:
Depth charges are quite literally explosives in a barrel that sink to a set depth before exploding. They wouldn't be 100% accurate due to them tumbling as they went down into the water. You usually needed at least a couple of Depth charges before you could knock out a Jerry (slang word for German during world war 2, fun fact!) U-Boat submarine, and this still applies today.
Nebraska was too far north for plantations--people of Nebraska wanted territory without slavery. Kansas was further south and platations could be built there. As soon as the Kansas-Nebraska Act was passed, thousands of people rushed to claim land in Kansas. This would tip the vote on slavery.