Which inventions had the greatest impact on trade in china during the middle ages? (pick 2 or 3) 1.the water-powered clock 2. woodblock printing 3. the compass 4. gunpowder 5. paper money

 The correct answer is : 4. gunpowder and 5. paper money

Explanation:  The powder began to be used to make firecrackers, fireworks and flares to make signals. Then they invented weapons to use in war, in rifles and rockets.

Paper money has several advantages over the currency, it is more comfortable, a bill can replace several coins, it is lighter than the metal coins, but in itself the paper currency has no value as the coins were gold and silver.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.