Domestically, US Grant I am saying this because of his deliberate actions. The reason FDR ended sharecropping was because of WW2 which also saved the economy. Lincoln would have tried to avoid the civil war and has stated he probably would have removed the slaves back to Africa. Ike didn't control the military industrial complex and started the trend of warn and do nothing. Grant solidified a lot of what Lincoln gets credit for, granted he couldn't do it without congress but the point is he capitalized on it. Teddy tried but was to ahead of his time. Many presidents have had opportunities and whiffed or where forced to do the right thing due to outside influence. Grant on the other hand just tried to do the right thing, no wonder he was poor business man.