motor neuron, one of various efferent nerve cells that transmit nerve impulses from the brain or from the spinal cord to muscular or glandular tissue. According to location, some kinds of motor neurons are the peripheral motor neurons and the upper motor neurons. Also called motoneuron.
The Zimmerman telegram probably had a peripheral effect on breaking the isolationist sentiment in the US in WWI. Relations with Mexico were strained already (Veracruz was occupied) but once Huerta was gone, the Mexican neutrality in the World Wa...
The Zimmermann Telegram as it was sent from Washington to Ambassador Heinrich von Eckardt (who was the German ambassador to Mexico). Mexican territory in 1916 (dark green), territory promised to Mexico in the Zimmerman telegram (light green), the pre-1836 original Mexican territory (red line).