Most of this money is in index funds, which do not choose countries; their weights follow market value. So the map of where it sits is largely a map of what the world's listed companies are worth, seen through one particular window — funds registered in the United States, which are the only funds that file Form N-PORT. European and Asian investors' funds are outside the window. Country means the issuer's country of incorporation as filed, which is not always where the business is; the pages mark the codes where that matters. Within those limits every figure is a filed number with a source link, dated by the period it describes and the day the SEC received it, and the definitions are the same ones used across this site.
Nobody knows the future; what history offers is the chance to state an expectation in numbers, wait for the next filing, and be corrected in public. The ledger below is for that.