Answer:
An oasis can be formed by an underground aquifer or river that creates enough pressure for water to seep to the surface, forming the oasis. These aquifers and natural springs allow for life to exist in harsh climates like the desert and are often well known to local herders, farmers, and travelers in the region.
Tang Dynasty was able to strengthen China thru the efforts of its Tang Taizong and Empress Wu in which the former brought back China's government and the latter empowered women. The Song dynasty continued the good governance and elevated the military system thru systematized testing.
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<span>Politically the Republican dominated from 1861 to 1933. During this period that is 72 years only 16 years were ruled by Democrats which is four terms. To specify, the years of ruling by republican are Lincoln 1861-1865, Johnson 1865-1869, Grant 1869-1877, Hayes 1877-1881, Garfield 1881, Arthur 1881-1885, Harrison 1885-1889. This was continuous period and then there was McKinley 1897-1901, Roosevelt 1901-1909, Taft 1909-1913 and then again Harding 1921-1923, Coolidge 1923-1928, Hoover 1929-1933.</span>
One thing that c<span>ommunism and socialism had in common was that both ideologies sought to reduce wealth inequality by ensuring that profits were "redistributed" to a certain extent to the majority of citizens. </span>
