With a PoD anytime after August of 1961, make JFK's Alliance for Progress meet its goals in at least half of the countries in Latin America:
1. an annual increase of 2.5% in per capita income
2. the establishment of democratic governments
3. the elimination of adult illiteracy by 1970
4. price stability, to avoid inflation or deflation
5. more equitable income distribution
6. land reform
Kennedy doesn't get assassinated, Congress pledges more than $20 billion in aid for Latin America, the Missile Crisis goes differently and/or doesn't occur...use your imaginations, anything but a massive war is allowed.