What is the leading cause of preventable death in high school athletics?

Exertion heat stroke  

Explanation:

Exertion heatstroke is the leading cause of preventable death in high school athletics. Heat illness prevention is a course that has been provided in high school to prevent from this stroke. This course is related to maintaining the heat plan. There are some guidelines are mentioned in the course on how to account for the changes in the environment condition and the other related factors. It focuses on the hydrating plan and to establish the emergency plan in regards to the suspension about the exertion heat stroke.

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