<span>Nationalism helped lead to WWI because it caused conflict
because nationalism is the feeling that one nationality is better than the other</span>
Answer:
1921
Explanation:
On this day in 1921, Adolf Hitler becomes the leader of the National Socialist German Workers’ (Nazi) Party.
It forced auto companies to add safety features to their vehicles, <span>including head rests, energy-absorbing steering wheels, shatter-resistant windshields, and seat belts.</span>