DUE IN 2 MINUTES Why so most people in the four countries we studied live in urban areas?

Your

Urban areas always have a warm tropical climate.

There are more jobs in the factories and businesses of the cities.

Urban areas have more arable land in these countries.

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

for your question the answer would have to be france