<u>Answer:</u> B. Upton Sinclair
<em>The muckraker that influenced regulation of the meatpacking industry is Upton Sinclair.
</em>
<u>Explanation:</u>
<em>Upton Sinclair is an famous American writer.</em> He wrote over 100 books but in the book The Jungle he has mentioned about the meat packing facilities. He mentioned the <em>ill behaviour of packing the rotten and bad meats that shocked the public. </em>
His statement of the diseased meat packing system led to the establishment of federal food safety laws. <em>Even a major reform movement was initiated in the United States. </em>
Answer:
A - a chief legal Officer
Explanation:
1422 BCE was 598 years ago.
