There are many vulnerabilities of the economic structures of many developing countries and the increased need to address them in view of the impact of the crisis on international trade.
Interesting question. It may have multiple answers depending on the specific characteristics of each country. A short answer could be to develop a stronger institutional framework. It is true that many developing countries lack solid institutions (independent and effective judicial system, efficient government, political stability, reliable financial sector and sound banks, etc). High quality institutions improve productivity and competitiveness, thus, reducing large fluctutions of exchange rates.
استقرار سعر الصرف هو انعكاس لقوة اقتصاد الدولة وهذا لن يكون الا من خلال التنافسية التصديرية التي تعمل على تقوية الانتاج المحلي
Probably producing acceptable and tradable products and giving confidence to their trade partners with approriate political and economic organisation.