One important impact of the mongol expansion
across asia and europe was the
(1) increased authority of the kievan princes
(2) rise in trade along the silk roads
(3) introduction of hinduism into chinese
culture
(4) maritime exploration of the arabian seacoast

(2) I believe it was rise in trade along the silk roads. Although the silk road was used, during the Tang Dynasty the use of it slowly and slowly decayed. However, the Mongol Expansion into China rejuvenated the Silk Road.

Ifound this on google “the change in control meant as house minority leader, pelosi was widely expected to become speaker of the house in the next congress. on november 16, 2006, the democratic caucus unanimously chose pelosi as the democratic candidate for speaker.” i hope this

Idont know which one is right   but i know that c is wrong and a might be wrong