The Supreme Court case that found the use of the grandfather clause unconstitutional is the Guinn v. United States, 238 U.S. 347 (1915). In its decision, the Supreme Court ruled that the grandfather clause<span> exemptions to </span>literacy tests<span> were unconstitutional. It declared the grandfather clauses as </span><span>repugnant to the Fifteenth Amendment and therefore null and void.</span>
During this period a Military Dictatorship ruled over Brazil's population, this meant the government persecute and killed the liberal and socialist leaders that stood against the dictatorship. Despite the Dictatorship in Brazil was not as cruel as in other South American countries like Argentina or Chile, it implied the violation of human rights and democratic values.
The Egyptian Pyramids is one example of a construction made of large stones. HOWEVER, The question seems that there should be pictures included, but there is not. So I give an example to help however I can, Feel free to comment and give more context if you wish for further help.