Another reason for the sudden strength shown by the Revolutionary movement was that the patriots were organized and the friends of the established government did not know their own strength. The agent of British influence in almost every colony was the governor. In 1775 the governors were all driven out. There was no centre of resistance about which the loyalists could gather. The patriots had seized the reins of government before their opponents fairly understood that they had been dropped. [Sidenote: Feeling of common interest.] Another influence which hastened the Revolution was a desire to supplant the men highest in official life. There was no place in the colonial government for a Samuel Adams or a John Adams while the Hutchinsons and the Olivers were preferred. But no personal ambitions can account for the agreement of thirteen colonies having so many points of dissimilarity. The merchants of Boston and New Haven, the townsmen of Concord and Pomfret, the farmers of the Hudson and Delaware valleys, and the aristocratic planters of Virginia and South Carolina, deliberately went to war rather than submit. The causes of the Revolution were general, were wide-spread, and were keenly felt by Americans of every class. [Sidenote: Resistance of taxation.] The grievance most strenuously put forward was that of "taxation without representation." On this point the colonists were supported by the powerful authority of Pitt and other English statesmen, and by an unbroken line of precedent. They accepted "external taxation;" at the beginning of the struggle they professed a willingness to pay requisitions apportioned in lump sums on the colonies; they were accustomed to heavy taxation for local purposes; in the years immediately preceding the Revolution the people of Massachusetts annually raised about ten shillings per head. They sincerely objected to taxation of a new kind, for a purpose which did not interest them, by a power which they could not control. The cry of "Taxation without representation" had great popular effect. It was simple, it was universal, it sounded like tyranny. [Sidenote: Resistance of garrisons.] A greater and more keenly felt grievance was the establishment of garrisons. The colonies were willing to run their own risk of enemies. They asserted that the real purpose of the troops was to overawe their governments. The despatch of the regiments to Boston in 1768 was plainly intended to subdue a turbulent population. The British government made a serious mistake in insisting upon this point, whether with or without taxes. [Sidenote: Resistance to Acts of Trade.]