Your answer is stem cell research
I believe the answer is: Representation
Representation is how we construct existing information from our memory in order to make a general interpretation/perspective of that information. The type of representation that we has tend to be influenced by personal experience, intelligence level, and personality.
They were able to stay isolated from the world for so long because of the way there were on the map
<span>•Graduated income tax(established through 16th amendment)
•Direct election of senators(established through 17th ad)
•Gov't ownership of railroad, telegraphs, & telephones
•Coinage & free silver</span>