why was the Song dynasty's shift to paper currency an improvement over coin currency? A. Paper currency was cheaper to manufacture. B. Paper currency was harder to counterfeit. C. Paper currency was more durable. D. Paper currency was easier for traveling traders to use.

D. Paper currency was easier for traveling traders to use.

Explanation:

Got it.

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ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.