One of chinas most important achievements during the postclassical era was:​

They were the gunpowder, printing press, paper and compass. The invention of gunpowder changed the whole scenario of warfare.

Explanation:

it would have concentrated power in the executive branch of the government. it would have restored balance among the three branches of government. it would have set a precedent for government intervention in the economy. it would have signaled an end to all the programs of roosevelt’s new deal.

did this .

i believe the answer is the last option, the magyars preferred to invade by land.

i hope this ! : )