The three nims guiding principles are:

Flexibility, standardization, unity of effort.

Explanation:

The National Incident Management System (NIMS) is a body made by the department of homeland security and is used to manage incidents.NIMS is guided by three principles which are , flexibility, standardization, and unity of effort which is the third principle added in 2017 and it means coordination of activities among various organizations to achieve the same objectives.

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.

a: social security and social programs