DAR ES SALAAM, Aug. 11 -- WHAT if Tanzanias next major source of development finance is not sitting within our borders, but waiting in investment portfolios around the world?

What if every global investor looking for an emerging-market opportunity could now look at Tanzania not only as a destination for tourism, manufacturing or natural resources, but also as a market where they can invest directly in the countrys growth story?

This is the significance of the recent decision by the Bank of Tanzania to open participation in Government Treasury bills and bonds to all non-resident investors.

It is more than a regulatory amendment; it is an invitation to the world to invest in Tanzania.

The reform is a commendable step towards deepening T...