Actually have come to understand the fact that when ever dollar increases it may likely cause the depreciation of other currencies in underdeveloped countries. Particularly this might make this underdeveloped countries to be very poor. It can also make them not to engage in the global market of trading, because their currencies can not meet up to this increase in dollar. I think it’s really a global issue that needs to be addressed in order to help this underdeveloped countries.
Agree with OP, the increase in USD price can cause many negative effects on developing countries. I have a feeling that when the USD increases in value, other currencies will lose value compared to the USD. This makes imported goods more expensive, leading to increased inflation and reducing people's purchasing power. And also the debt burden, developing countries have large debt in USD. As the dollar appreciates, their debt burden also increases, leading to a higher risk of default.
And that is also part of the reason we see the polarization of the economy. With the coordination of countries around the world, developing countries can reduce the negative impact of the USD increase prices and promote economic development.