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>
A is the correct answer .
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It would be "c. Prince Henry the Navigator of Portugal" was is <span>considered a pioneer of the Age of Exploration, since the Portuguese were at the forefront of exploration and conquest in the New World. </span><span />
In colonial times, the New England colonies had cold climates, a short growing season, and brittle soil, which could grow little crops. Therefore, the colonists has to result to a different method to sustain their economy and turned to fishing, lumber, shipbuilding, and other industrial occupations.
