In 1917, Bolshevik leader in Russia sought peace with German because the new Russian government -wanted to retain power and avoid German occupation-
Bolívar himself led multiple expeditionary forces against the Spaniards, and between 1819 and 1822 he successfully liberated three territories—New Granada (Colombia and Panama), Venezuela, and Quito (Ecuador)—from Spanish rule.
The difference between endothermic and exothermic reactions lies in the words themselves. "Thermic" refers to heat, just as in the word "thermometer." "Exo" means "outside" and "endo" means "inside." Thus, an endothermic reaction pulls heat into an object or area, while an exothermic reaction expels heat.
The lords gave vassals land in return for military and other services. Feudalism was a help to Western Europeans for the flowing reasons: Feudalism helped protect communities from the violence and warfare that broke out after the fall of Rome and the collapse of strong central government in Western Europe.