What is the financial arrangement of SAARC?

members make provision of funds in their own national budget...

The financial arrangement of SAARC is that the member states make provisions in their respective national budgets for various types of activities.

Explanation:

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.