<span>no force is needed to overcome sliding friction once force has been applied to overcome the starting friction.</span>
It's a thing called "scorched earth". the russians would rather burn their fields and slaughter livestock to the ground than have the french successfully take over their houses and farms and eat and steal their food, etc. it's a way to let the french starve!
The resources that were traded on the Trans-Saharan trade were salt, slaves, and religion. The West African countries were trading their gold for salt. The slaves were sent North and served as slaves or slave concubines. Islam was spread through the use of the Trans-Saharan trade route.
Overweight children or children who eat excessive amounts of sugary foods and fatty acids might feel discouraged or embarrassed to pick unhealthy options, instead referring to the healthier options to avoid social conflict.
