What is associated with: a potato famine during the 1840s caused this islands population to decline by about 2 million?

What is referred to by 'a postponement of punishment'? Based on the clue 'a posturing person whose ostentatious attire makes...', what is the answer? Based on the clue 'a potato a winter apple with a rough brownish ski...', what is the answer? Based on the clue 'a potato crisp race car legend earnhardt', what is the answer? Based on the clue 'a potent drink a powerful rifle a runner finishing...', what is the answer? What is associated with: a pound of this egg delicacy from russia could set you back 1200 from iran over 1600? Based on the clue 'a powder made from this part of the plant is used ...', what is the answer? What is associated with: a powerbar contains the oat type of this a 1980s cholesterol fighting craze?