Napoleon's schemes of colonial expansion, though equally within the letter of the treaty, were not less disconcerting. The reconquest of San Domingo appeared necessary in order to obtain a base for the effective occupation of the new French possession, Louisiana. The despatch of an expedition for this purpose in December, 1801, had excited grave suspicion, and when two-thirds of the army had died of yellow fever and the remainder had returned home, fresh troops were sent out to take their place. A new naval expedition was prepared in the Dutch port of Helvoetsluis, but it was impossible to persuade British public opinion that its real destination was San Domingo. Finally, on the eve of hostilities, in the spring of 1803 Napoleon, despairing of advance in this direction and disregarding the Spanish right of pre-emption, sold Louisiana to the United States for 80,000,000 francs. Still more embarrassing was Bonaparte's eastern policy. In September, 1802, Colonel Sébastiani was sent as "commercial agent" to the Levant. He was instructed to inspect the condition of ports and arsenals, to assure the sheykhs of French favour, and to report on the military resources of Syria, Egypt, and the north African coast. His report, which was published in the _Moniteur_ of January 30, 1803, set forth the opportunities that France would possess in the event of an immediate return to hostilities, and was naturally interpreted as disclosing an intention to renew the war on the first opportunity. Six thousand French would, he said, be enough to reconquer Egypt; the country was in favour of France. In March, 1803, Decaen left France with open instructions to receive the surrender of the five towns in India restored to France, but with secret orders to invite the alliance of Indian sovereigns opposed to Great Britain. On his appearance at Pondicherri, the British commander prepared to seize him, but he escaped to the Mauritius, which he put in a state of defence, and made a basis for attacks on British commerce which lasted from 1803 to 1811. [Pageheading: _CAUSES OF MISTRUST AFTER AMIENS._]