Which was a reason that rice-farming promote the spread of slavery?
a it produced a good harvest but little profit, so labor needed to be very cheap.
b it required skills that african slaves from barbados had already learned.
c it produced enormous profits for planters that allowed them to purchase slaves.
d it required large numbers of workers laboring the hot, humid, unhealthy conditions.

How did chinese culture change during the warning stated period

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

What notable contributions to science has sandia national labs (snl) produced over the years?