What contributed MOST to the adoption of the policy of island hopping in the Pacific Theater of World War?

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

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?

What types of subjects did public high schools in the 1900s emphasize and why