What was Marco Polo's role in China? O He invented new printing methods.
O He made weapons and armor to trade.
He was appointed to the Imperial Court.
O He was a patron to artists on the Silk Road.
please help me

The pope claimed he was the head of byzantine churches only.

The congress shall have power to lay and collect taxes, duties, imposts and excises, to pay the debts and provide for the common defence and general welfare of the united states . .; to borrow money on the credit of the united states; to regulate commerce with foreign nations, and among the several states, and with the indian tribes. —constitution of the united states, article i, section 8 which of these are expressed powers granted by this part of article i, section 8? check all that apply. lay and collect taxes and duties pay debts regulate american indian groups regulate commerce within states borrow money regulate commerce with foreign nations

2. what was the dred scott decision about? what do we learn from this supreme court case?