The two greatest factors that contributed to the spread of disease among civil war soldiers were that they were in extremely close quarters, and that there was no medicine that could kill the germs in question.
On May 18, 1896 the U.S. Supreme Court case Plessy v. Ferguson ruled that separate but equal facilities were constitutional.
Rock composition and measuring the seismic waves provide knowledge for the scientists to study the interior of the earth.
Explanation:
When the crust gets distributed it is easy to study the layers of the different materials that got settled and compacted in the earth. Patterns that are formed in the rocks provides to be a good source to know about the earth's crust. rock cores are cylindrical sections which are cut and removed from the earth crust for research purposes.
It is impossible to drill to the center of the earth and so scientists rely on seismic waves and the speed of the seismic waves depends on the material on which it is passing through. The toughness and stiffness obstruct the speed of the waves which is a means for the scientists to undertake research on the substance which hampered the speed of the seismic waves. P-waves, or pressure waves, which go through both liquids and solids, and S-waves, or shear waves which go through solids but not liquids. This provides the best data to undertake research regarding the earth' crust by the scientists.
In the 1800s they had 4 candidates running so thomas and burr had a tie so they decided no more than 2 candidates will run for president that's why they came up with the 12th amendment.
<span>The question is 'who founded the national grange. The national grange was founded by Oliver Hudson Kelley in 1867. It was formed as a national organisation. Its sole purpose was to encourage families to bound together to promote the political well being and agricultural practices in the community. It is the oldest American agricultural advocacy group with a national focus.</span>
