The process is called "boycotting".
(It was not called this until 1880, for the ostracism of Charles Boycott, a British land agent for landowner Lord Erne in County Mayo, Ireland.)
The colonists tried to hurt the British by refusing to import their goods or export American goods to Britain. This practice of halting trade is known as an "embargo."
Boycotting
A practice that was used by the colonists to hurt British trade was the refusal of British goods that were imported and the export of American goods to Britain. This was in response to the taxation on goods that the British were trying to impose on the colonies.
It because of racism practice in taxation system. American Colonists had no representation in Parliament.
Salutary neglect
Salutary neglect
Salutary neglect
The American colonists and the British
they fought the british
The British were taxing the colonists for tea and other necessities unfairly. They also would not let the colonists be represented in Britain.
In practice, the British mercantile system worked so that the Colonists were being regulated by British rules. The Colonists resented this and the passing of the Stamp Act was said to be the last straw that pushed them over the edge as far as hostility toward the British.
Practice is American English; practise is British English.