Keynesian or pump priming philosophy, In other words, money should be held in the working class of the people. Their spending would set the pace for the economy because it would then determine how businesses and companies would set new demands and needs for the new hired workers. This was controversial and interesting because it was exactly the opposite of the previous Republican model of "Trickle Down economics"
People wanted energy to be stronger and live longer without pain.
The boll weevil made it hard to grow cotton (one of the biggest crops in the south) and made decimated the cotton industry
"Weary of the 'Negro Question'" and "sick of carpet-bag' government" signifies the Northerner's tiredness of trying to solve the race problem in the South and they were suspicious of what they were beginning to see such as a corrupt government.
"Unification of all casts in India" against some offenses of Britishers, caused the sepoy rebellion in 1857
Hope this helps!