a series of complicated factors caused the war, including a brutal assassination that propelled Europe into the greatest conflict the continent had ever known. The murder of Archduke Franz Ferdinand outraged Austria-Hungary. ... Austria-Hungary was furious and, with Germany's support, declared war on Serbia on July 28.
This is a little tricky but if i had to say, the answer would be A ^-^ The Civil War still hadn't been that long ago, so people of different races still didn't have the same rights as the whites (hence segregation)
This is known as the Peasant Revolt
In June rebels from Esscex and Kent marched toward London. On the 13th the Kentish men, under Wat Tyler, entered London, where they murdered some Flemish farmers.
<h2>Hey there,your answer is </h2>

<h2>Hope it helps you </h2>
William McKinley was the president in the year 1900