Because of Rene the western philosophy and mathematics flourished
<span>the one that best describes the main way upton sinclair gathered research for the jungle is: A. he hired investigators to spy on activities in a meat-packing plant
since he's stuck with processing and analyzing the data from the lab, he feel that hiring an investigators to spy on meat-packing plant will save him a lot of time</span>
Answer: his first principle is that his own mind exists.
Explanation:
by printing more money or obtain loans¯\_(ツ)_/¯