> They decided to break apart into many small, weak nations, due to the selfish interests of the different types of agricultural interests being pursued in each area
We've had some advances in integration. Many of them in the early 2000s when most of the Central American governments were at the moment right wing.
Unfortunately the left/right wing divide slowed down many integration attempts.
> But they could borrow ideas from the EU. They couuld reunify.
We've tried to do some of them, with the SICA (our EU equivalent) with varying degrees of success or failure.
Some of the successful ones are having our electricity grid interconnected, and the uniform customs regulation for Central America.
Some of them have great potential but are not widely used or promoted, like SIPA, the regional interbank payments that could be like the EU's SEPA but is not widely known, as even if banks use them internally, they still charge SWIFT prices to the end customers.
Others like the CA4, our Schengen free-movement-like-agreement, have been reinterpreted so many times that the spirit of the agreement is now only a fraction of what it originally was.
Then we have some private initiatives like Claro's popular free voice and data roaming in all Central America except Belize.
Others used to be great, but have been limited in the past year due to excessive regulations, like some private banking groups Central Ameican banking services, which used to offer easy and affordable inter country bank transfers but now they are very limited and expensive.
Some we lack completely, like the easier mobility between countries that EU citizens have. Even now, moving countries between Central America without family ties is expensive, difficult or even next to impossible.