Answer:
b
Explanation: i took the test
built the Great Pyramids
developed advanced irrigation
expanded the empire’s territory
improved trade and transportation
Clara Barton began the Red Cross. She was a pioneer nurse.
Interesting question. The black death was a rather ready virus or as they called it a "plague". The reason it was so deadly it because it was a brand new virus/plague that the Europeans had never encounterd therefore being rather deadly for there immune system was not ready for it and had no way of treating it because it was an known virus from overseas. If you didn't know it was carried over on a ship where the virus was attached to a rat with further infected the crew and soon after the entire towb
