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:
The best option will be the C. Railroads made the rapid movement of produce and goods into many markets possible.
Because Railroads basically were the key point to national business and economic growth. Eliminating the needs for long and weary trips, while also founding and fueling other soon-to-be huge business industries, such as iron, coal, copper, machinery, etc., railroads made "rapid movement of produce and goods into many markets possible."
tan A should be the corner try work out work out:

first and then add all the others (B=90)
Explanation:
A and C should be the same
... because it is possible to get by on very little if you live frugally.
Tom Monaghan is a very religious man, who after selling the Domino's Pizza chain in 1998, founded a Catholic university in Florida (in 2003), named Ave Maria University. The university currently has an enrollment of about 1,000 students. He started a planned community in that Florida location as well, naming the town Ave Maria also.
<em>I hope this helps.</em>
<em>Answer:-</em>
<em>However, the movie's overt racism outraged African Americans and civil rights advocates. Blacks, particularly in the film's second part dramatizing Reconstruction, are portrayed as the root of all evil and unworthy of freedom and voting rights.</em>
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