What is the significance of this state to Lincoln's life?[Illinois] AIt's where he was bornincorrect answer BIt's where he began his political careerincorrect answer CIt's where he delivered the Gettysburg Addressincorrect answer DIt was the first state to secede after Lincoln was elected Presidentincorrect answer

it was douglas macarthur..

your answer is c i hope that

protect u.s. businesses from competition

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.