<em>Hello there, and thank you for posting your question here on brainly.
What event caused World War 1?
<u>Answer:
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<u>The event that caused World War 1 to start was the assassination of Archduke Franz Ferdinand on June 18th, 1914. World War 1 started a month later.
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The Manhattan Project was the secret government initiative that lead to the creation of the first atomic bomb in US history. This program was a result of hundreds of millions of dollars worth of money and the collaboration of individuals all over the country.
Over the course of the Manhattan Project, 120,000 people were involved in the creation of this atomic bomb. This include scientists and engineers who worked together on the specifics of the bomb and the impact it would have. This success can also be contributed to the business owners and workers who helped build the technology and equipment needed to make this bomb/test it during the 1940's.
Lastly, the military worked with all of these different groups, especially the universities (like including Columbia and University of California at Berkley) who were conducting research for the government.
What is delta is 3rd option. what is map is 1st option.
"Movies helped people forget their troubles." The answer is B.