1- in the article Tokyo intervened in the foreign- exchange markets Thursday for the first time in 24 years to try to manage the fallout .. a, what does this intervention by Japan's central bank mean,I,e,, did they buy or sell Japanese yen in the market? b, briefly, explain why in yur own words.

2- the federal reserve banks chair Jerome Powell said ,it's hard to talk about a collaboration (among different countries, central banks ) in a world where people have very different levels of interest rates, haw does a country interest rate affect its exchange rate ie, it's currency value?

3..haw does the value of US dollars affect Us inflation rate? Haw does the value of Us dollars affect us companies foreign profits

4. what does a tightened monetary policy mean , why Japanese government would like to see more information first before they will consider following suit by raising interest rates?