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.
The case you are looking for is Marbury vs Madison
Manifest Destiny is the belief that America was willed to occupy from the Atlantic coast to the Pacific coast, so the answer is A.
Answer:
Factory smoke and other conditions
Explanation:
Back in the second industrial revolution there were many factories being built, and there were a lot of people willing to work for lower wages. Conditions were harsh, as there was a lot of smog, factory smoke, etc. and many people were harmed by the many machines in factories that had no safety precautions. Also, the gases and smoke caused breathing and lung illnesses.
