The ability to provide cheap labor
The importance of the river for transportation and trade greatly increased in the early 1800s as paddle wheeled steamboats became popular. Cities along the Mississippi such as St. Louis boomed. During the Civil War, both the North and the South used the river for transportation.
Answer:
S waves travel through solids or very dense, glassy liquids. P waves travel through solids, liquids, and gasses.
Explanation:
S-waves and P-waves are both body waves that moves through a substance. They are different from surface waves that moves on the surface. These surface waves are love and Rayleigh waves.
The body P-waves and S-waves are often differentiated by the materials they propagate through. P-waves are primary waves and they pass through any earth materials. They can be propagated through solids, liquids and gases. This is because they are longitudinal waves.
S-waves are shear waves and they cannot pass through liquids and gases. These materials do no shear.
