Answer:
<em><u>It caused people to question the role of government, which sparked the imagination of Enlightenment thinkers.</u></em>
The Ohio River valley was crucial for settlement as it supplied people with the needs to survive. Rivers attract other loving animals, meaning food to hunt. Running water to drink, and fertile soil in order build agricultural land.
The immediate start of WWI was the assassination of the Archduke. A Serbian gang member, Gavrilo Princip, shot the Archduke, which really angered Austria, so Austria declared war on Serbia, which eventually led to WWI. The sinking of the Lusitania happened in 1915 and the German invasion of Poland was the start of WW2.