Answer: The answer is "new laws"
Explanation:
Patent law<span> is the branch of </span>intellectual property law<span> that deals with new inventions. Traditional </span>patents<span> protect tangible scientific inventions, such as circuit boards, car engines, heating coils, or zippers. ... Once granted, a </span>patent<span> gives the inventors the exclusive right to sell their invention for 20 years.</span>
the correct answer is tariff.
15. B
16. D
17. F
18. E
19. A
20. C
