Help me answer both of these questions please i need it

Why might it be important to know a currency’s exchange rate

American indians in the blank built longhouses options -north west -great plains -south east -eastern woodlands q#2 american indians in the blank celebrated with a potlatch options same as before!

Ineed ! 10 more minutes until test is ! will give 15+ points and ! kansas history which is an example of popular sovereignty? a. the fugitive slave law enforces stricter penalties for people who runaways. b. the united states congress passes a bill limiting the slave trade. c. settlers in nebraska vote on whether they wish to make slavery legal. d. an abolitionist exercises free speech by publishing a newspaper.