Ideological: A basic thing to remember about this is the famous phrase "No taxation without representation." The colonists did not want to be taxed without representation. This lit the fire of revolt and started the wheels turning for independence. Additionally, after the French and Indian War, the colonists felt that they had rights to the newly gained territory. Yet, the British government did not want the colonists to settle the area because of clashing with indian tribes, but the colonists felt that they were being deprived of their rights. This lead to conflicts and the colonists resented the British and began a push for representation. However, the British felt that the colonists were represented. This leads to the political issue.
politically: Virtual representation was the crowns defense for not having any colonist in