Answer:
B.new food crops, which improved the European diet
Explanation:
Answer A, C, and D were introduced to the Americas, not Europe. Some diseases, like syphilis, were brought to Europe but the majority were brought from the Europeans which greatly impacted the population of Native Americans. Western Europe was mostly impacted by the introduction of new crops.
Asdfghjkl;'olikujyhtgrfedsasedrftgyhuijoklp;'
;o.li,kujyhtgrfijokpl;kimujnyhbtgrvfcedwxsfzrtgyuhijokpl[;,imunyhbtgvrfcedxwsqzrftgyuhijokpl[;,ikmuj6nyhbtgfvrcedxsfzrtgyuhijokpl[;ki86j7u5h6y4gtfrqewr6tg7yh8uj9ikolp;[o9k8ij7uh6yg5tf4rdewrtr7yg8u9hi67op89k8ij7uh6ygtfredwsrde6tfgy78uh96io8p;k8ij7uh6ygt4frdew4fr5gty6h7ki90lopjuhygtfr7de4frg6th8jyk0hl5up;6[m,'7l;p,kominjhubtgvrf5crd4e34fr5gt6bhy7unj89ol,7i0km9j8yrh7eg6r5f4ecfrv5gtb6hnu8mki9,-lo.;xrctybuiomp,[sezxrdctfvygbuhnijmok,l;'./
sxezxrdctfvygbuhijmok,pl.[;rdctfbyuhjmok,pl[.;/'tcrfvgybinjkml,;'.
/tfrcvygbuhinjmokl;,'.
/drxctfvygbuhiokp[.;'/
fgbhtnyjmuki,lo.;/';.ol,ikujyhtgrfedwsqayhujiokpl[;./'.lo,ikmunybtvrcexwzqedrtfyguhijokpl;./'lo,ikmujnyhbtgvrfcedxwszqadertfyguhimop,[.;]'/;p.ol,imunybtrecxwqsedrftgedwsqaesrxdctyubiomp,[.]/'9p;.8ol7,ik6mujnyrhbtegvrfcedxwsa3w4ed5r6ftv7yb8un9imop,[.]'/\l7oi6uny5btrvecwxqzerctybulkjhgfdsasdfghjkl;'
