How about asking an understandable question if you expect someone to give you an understandable answer.
The Battle of Marathon had shown to the Greek city-states that they could thwart Persian invasion forces and also proved that Greek armour and tactics were superior to those of the Persians .
The Athenians lacked the resources in manpower to thwart the advance of the Persian Army .
The Egyptians needed stronger leadership to thwart an Assyrian invasion.....
About 175,000 banded together on the beaches to thwart the Germans.
General Douglas MacArthur was placed at the head of UN Forces in the Korean War (which was the conflict that resulted when the UN acted to thwart North Korean aggression against Seoul and South Korea generally.
They saw no reason for expansion beyond trade, were self sufficient in terms of food and they maintained a large and formidable military force to thwart invasion.
Thwart means to confound, foil a plan beat someone or to run transversely across. I must thwart the villain in his plans. The seating ran thwart ships across the boat.
In 1983, the U.S. Marines invaded Grenada primarily to defeat resistance forces that were backed by Cuba. The invasion, known as Operation Urgent Fury, was justified by the U.S. government on the grounds of protecting American citizens and restoring stability to the island after a coup. The operation aimed to thwart the influence of Cuba in the Caribbean and restore a government aligned with U.S. interests.
A thwart is a seat across a boat for a rower to sit on.
aid, assist, encourage are all antonyms for thwart
The word is thwart (prevent someone from doing something).
The British successfully prevented a German invasion primarily due to their strong naval power, which allowed them to control the English Channel and thwart any seaborne assaults. The Royal Air Force's decisive victory in the Battle of Britain in 1940 also played a crucial role, as it effectively defended British skies against the Luftwaffe's aerial attacks. Additionally, Britain's geographic advantages, including its island status and fortified defenses, contributed to the resilience against invasion. Combined, these factors ensured that Germany could not successfully launch an invasion of Britain.