Answer:
They built schools where people learn.
They built hospitals where people get treated.
They spread Islam.
They brought new crop that people eat nowadays.
Explanation:
Answer:
a. chain communication network is most appropriate.
Answer:
Thixotropic refers to a gel/substance that is thick and stable but will start to move or flow like a fluid when stress is applied (being shaken, stirred, placed under pressure, etc.). This is important to keep in mind when building houses as landslides or other disruptions and movements in the ground can happen during an earthquake with thixotropic clay in the soil, causing the buildings there to collapse or otherwise be damaged.
