When a new family takes control, then a new dynasty begins. The Mandate of Heaven is what the Chinese people believed gave their rulers the right to be king or emperor. It meant that the gods had blessed that person with the right to rule. A ruler had to be a good and just ruler to keep the Mandate of Heaven.
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According to Fred J. Cook, the muckrakers' journalism resulted in litigation or legislation that had a lasting impact, such as the end of Standard Oil's monopoly over the oil industry, the establishment of the Pure Food and Drug Act of 1906, the creation of the first child labor laws in the United States around 1916.
Winds blow in curved loops because of Earth's "rotation", since this rotation, being practically constant "pulls" the winds in certain directions that can be fairly predictable.
This is a complicated task, but Renaissance artists used and perfected linear perspective as a means of depicting three-dimensional depth in art. To achieve this perspective, artists would pick a vanishing point on the horizon line.