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The knowledge about interior of the earth is obtained through direct sources and indirect sources. Direct sources include rock materials from mining areas and molten magma from volcanic eruptions. Besides, scientists are working on “Deep Ocean drilling Project” and “Integrated Ocean Drilling Projection:
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Ghana was the first kingdom to take control of the salt trade.
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Treaty of Guadalupe-Hidalgo was a peace treaty between Mexico and the United States, signed on February 2, 1848 in the Mexican village of Guadalupe Hidalgo near Mexico City following the results of the Mexican- American War of 1846-1848.
The agreement established that Mexico, which has been defeated by the American military, had to cede up to 1.36 million km² (about 55% of its territory), which included the modern territory of the states of California, Nevada, Utah, New Mexico, Texas, parts of Arizona, Colorado, Wyoming, Kansas and Oklahoma. In addition, Mexico refused all requirements for Texas, and the international border was established on the Rio Grande River. In compensation, the United States pledged to pay 15 million dollars for damages to Mexican territory during the war. The United States also took on $ 3.25 million of Mexican government debt to US citizens.
D shorter enlistments for colonial troops
