Irrigation of crops led to salinization of the soil, Sumer was located on a flat plain that provided no natural barriers to invasion, and the land became too swampy to grow adequate crops.
Answer:
19 -B --> makes the most sense based on the events in the diagram
20- C --> this is a long-term effect
Its yes because yes is always right right on brooo
Sea
Land
Rivers
Climate
Not sure what your options are but hope this helps
Manufacturing, production and efficiency had increased through necessity during the Great War. America had emerged as a world industrial leader and the US economy was booming, profits were increasing which led to the period in American history called the Roaring Twenties with a massive rise in consumerism for the wealthy.
