the establishment of a national religion
Sedimentary rocks form beneath the surface of the earth. 
Mummified fossils are commonly found in cold climates. 
<em>[ They are formed when remains are buried rapidly in dry cold or hot environments ]</em>
Taj Mahal was built by Shah Jehan as a kind of tribute that was made towards his late wife called Mumtaz Mahal.
It took <u>20,000</u> people <u>22 </u>years to build the Taj Mahal.
After Shah Jahan suffered a stroke, his four sons began to fight/contest for the throne while he was sick.
Today the Taj Mahal remains one of the most <u> beautiful structural compositions</u> and <u>world's most iconic monuments, new Seven Wonders of the World.</u>
<h3>Did it take 22 years to build the Taj Mahal?</h3>
Around 1632, work on the Taj Mahal began. About 1638–1639 saw the completion of the mausoleum itself. By 1643, the auxiliary structures were complete, but decorative work didn't end until at least 1647. The 42-acre (17-hectare) facility took 22 years to build in total.
Therefore, The thing that happened to Shah Jahan and his four sons when he was ill was that the heir apparent and oldest son. In a protracted struggle for the throne, he was bested and later assassinated by his younger brother, Prince Muhiuddin (later the Emperor Aurangzeb), despite the support of his father, Shah Jahan, and older sister, Princess Jahanara Begum.
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