What is one cause of high infant mortality rates

Explanation:

High infant mortality rate of a region is mainly due to the ill health of the mother. Pre-mature birth is responsible for the infant mortality rate in U.S. This is caused due to many reasons because of pregnancy complications and even low birth weight. Also expectant's mother health conditions also determines the cause for pre mature birth such blood pressure, blood sugar, diabetes, Zika virus and also other infections may lead to the high rate of infant mortality rate.

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.