题目内容：
NewFoodsandtheNewWorldInthelast500years,nothingaboutpeople–nottheirclothes,ideas,orlanguages–haschangedasmuchaswhattheyeat.Theoriginalchocolatedrinkwasmadefromtheseedsofthecocatree（可可树）bySouthAmericanIndians.TheSpanishintroducedittotherestoftheworldduringthe1500’s.Andalthoughitwasveryexpensive,itquicklybecamefashionable.InLondon,shopswherechocolatedrinkswereservedbecameimportantmeetingplaces.Somestillexisttoday.
ThepotatoisalsofromtheNewWorld.Around1600,theSpanishbroughtitfromPerutoEurope,whereitsoonwaswidelygrown.IrelandbecamesodependentonitthatthousandsofIrishpeoplestarvedwhenthecropfailedduringthe“PotatoFamine（饥荒）”of1845-1846,andthousandsmorewereforcedtoleavetheirhomelandandmovetoAmerica.
TherearemanyotherfoodsthathavetraveledfromSouthAmericatotheOldWorld.Butsomeotherswentintheoppositedirection.Brazilisnowtheworld’slargestgrowerofcoffee,andcoffeeisanimportantcropinColombiaandotherSouthAmericancountries.ButitisnativetoEthiopia,acountryinAfrica.ItwasfirstmadeintoadrinkbyArabduringthe1400’s.
AccordingtoanArabiclegend,coffeewasdiscoveredwhenapersonnameKaldinoticedthathisgoatswereattractedtotheredberriesonacoffeebush.Hetriedoneandexperiencedthe“wide-awake”feelingthatone-thirdoftheworld’spopulationnowstartsthedaywith.
Accordingtothepassage,whichofthefollowinghaschangedthemostinthelast
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