why would you need a system to exchange currency between Japan and China? A. Japan has a stronger economy than China B. China has a stronger economy than Japan C. Their currencies have different values D. They speak different languages​

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u.s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.

If we can't separate our civilized self from our savage self which will take over and why

What happens after a star goes supernova? just wondering! [tex]supernova [/tex] answer asap i really wanna know!