Answer:
3. 3-D Printing.....You probably didn’t know that what’s now known as 3-D printing began in the early 1980s with a process called selective laser sintering. University of Texas alum Carl Deckard began inventing the process, commonly referred to as SLS, while he was still a graduate student.
Explanation:
Three civil rights leaders were murdered during a voter registration campaign in mississippi known as the freedom summer.
More and more people started growing crops so the people didn't have to keep hunting animals.
They still hunted just not all the time.
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