(M723) Philip, having now subjugated Thebes, and constrained Athens into submission, next proceeded to carry his arms into the Peloponnesus. He found but little resistance, except in Laconia. The Corinthians, Argeians, Messenians, Elians, and Arcadians submitted to his power. Even Sparta could make but feeble resistance. He laid waste Laconia, and then convened a congress of Grecian cities at Corinth, and announced his purpose to undertake an expedition against the king of Persia, avenge the invasion of Greece by Xerxes, and liberate the Asiatic Greeks. A large force of two hundred thousand foot and fifteen thousand horse was promised him, and all the States of Greece concurred, except Sparta, which held aloof from the congress. Athens was required to furnish a well equipped fleet. All the States, and all the islands, and all the cities of Greece, were now subservient to Philip, and no one State could exercise control over its former territories. (M724) It was in the year B.C. 337, that this great scheme for the invasion of Persia was concerted, which created no general enthusiasm, since Persia was no longer a power to be feared. The only power to be feared now was Macedonia. While preparations were going on for this foolish and unnecessary expedition, the prime mover of it was assassinated, and his career, so disastrous to Grecian liberty, came to an end. It seems that he had repudiated his wife, Olympias, disgusted with the savage impulses of her character, and married, for his last wife, for he had several, Cleopatra, which provoked bitter dissensions among the partisans of the two queens, and also led to a separation between himself and his son Alexander, although a reconciliation afterward took place. It was while celebrating the marriage of his daughter by Olympias, with Alexander, king of Epirus, and also the birth of a son by Cleopatra, that Pausanias, one of the royal body-guard, who nourished an implacable hatred of Philip, chose his opportunity, and stabbed him with a short sword he had concealed under his garment.