The picture above is of a Avenger Class Escort Carrier. A "poor man's carrier", the Avenger Class was made from converted cargo ships. Although slowish and could only carry 15-20 aircraft, the design proved effective for convoy protection, anti submarine warfare, and providing close air support for amphibious invasions. They were cheap to make (relatively) and easy to mass produce. However at the end of WW2, most escort carriers were scraped and by the 1960s the concept was pretty much dead and forgotten.
This in my opinion was a mistake. By the 1960s most of the world had experienced decolonization, and there were numerous countries that could benefit from having aircraft carriers, but couldn't afford real ones. So, what can we do to bring back the escort carrier concept and make it available to developing nations throughout the Cold War?
Note: Preferably conversions from cargo ships, not specifically designed brand new ships like the Casablanca class, although it's not nessecary. Also, light carriers are not escort carriers.