A reason that countries trade with each other is O to help their neighbors.
e to get products they cannot produce.
to sell goods they do not need
to share excess resources

to share excess resources

hope this helps you.

to get products they cannot produce

Explanation:

I know reading

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.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane