Why are some of these challenges specific to Indigenous people? Use examples.

The challenge only exclusive for indegenous people are discrimination between cultures and cultures, and the threats of industrial and the society that has been attracting them causing others abandon their own culture and intertwine with other society, therefore paving way to their extinction of their culture.

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.

the 2nd option is the answer