The condition of affairs in the United States, on the accession of President Harrison to office, in the spring of 1841, was difficult and critical, especially as far as the foreign relations of the country were concerned. Ancient and modern controversies existed with England, which seemed to defy adjustment. The great question of the northeastern boundary had been the subject of negotiation almost ever since the peace of 1783. Every effort to settle it had but increased the difficulties with which it was beset, by exhausting the expedients of diplomacy. The Oregon question was rapidly assuming a formidable aspect, as emigrants began to move into the country in dispute. Not less serious was the state of affairs on the southwestern frontier, where, although a collision with Mexico might not in itself be an event to be viewed with great anxiety, it was probable, as things then stood, that it would have brought a war with Great Britain in its train. To the uneasiness necessarily growing out of these boundary questions, no little bitterness was added by more recent occurrences. The interruption of our vessels on the coast of Africa was a frequently recurring source of irritation. Great cause of complaint was sometimes given by boarding officers, acting on frivolous pretences or in a vexatious manner. At other times the public feeling in the United States was excited by the exaggerations and misstatements of unworthy American citizens, who abused the flag of the country to cover a detestable traffic, which is made a capital felony by its laws. The affair of the "Caroline," followed by the arrest of McLeod, created a degree of discontent on both sides, which discussion had done nothing to remove, but much to exasperate. A crisis had arisen, which the Minister of the United States in London[24] deemed so serious, as to make it his duty to communicate with the commander of the American squadron in the Mediterranean.[25]