Parliament again tried to assert its authority by passing legislation to tax goods that the Americans imported from Great Britain. The Crown established a board of customs commissioners to stop smuggling and corruption among local officials in the colonies, who were often in on the illicit trade.

Americans struck back by organizing a boycott of the British goods that were subject to taxation, and began harassing the British customs commissioners. In an effort to quell the resistance, the British sent troops to occupy Boston, which only deepened the ill feeling.

The British eventually withdrew their forces from Boston and repealed much of the onerous Townshend legislation. But they left in place the tax on tea, and in 1773 enacted a new law, the Tea Act, to prop up the financially struggling British East India Company. The act gave the company extended favorable treatment under tax regulations, so that it could sell tea at a price that undercut the American merchants who imported from Dutch traders.

That didn’t sit well with Americans. “They didn’t want the British telling them that they had to buy their tea, but it wasn’t just about that,” Randall explains. “The Americans wanted to be able to trade with any country they wanted.”

The Sons of Liberty, a radical group, decided to confront the British head-on. Thinly disguised as Mohawks, they boarded three ships in Boston harbor and destroyed more than 92,000 pounds of British tea by dumping it into the harbor. To make the point that they were rebels rather than vandals, they avoided harming any of the crew or damaging the ships themselves, and the next day even replaced a padlock that had been broken.

Nevertheless, the act of defiance “really ticked off the British government,” Randall explains. “Many of the East India Company’s shareholders were members of Parliament. They each had paid 1,000 pounds sterling—that would probably be about a million dollars now—for a share of the company, to get a piece of the action from all this tea that they were going to force down the colonists’ throats. So when these bottom-of-the-rung people in Boston destroyed their tea, that was a serious thing to them.”

In response to the Boston Tea Party, the British government decided that it had to tame the rebellious colonists in Massachusetts. In the spring of 1774, Parliament passed a series of laws, the Coercive Acts, which closed Boston Harbor until restitution was paid for the destroyed tea, replaced the colony’s elected council with one appointed by the British, gave sweeping powers to the British military governor General Thomas Gage, and forbade town meetings without approval.

Yet another provision protected British colonial officials who were charged with capital offenses from being tried in Massachusetts, instead requiring that they be sent to another colony or back to Great Britain for trial.

But perhaps the most provocative provision was the Quartering Act, which allowed British military officials to demand accommodations for their troops in unoccupied houses and buildings in towns, rather than having to stay out in the countryside. While it didn’t force the colonists to board troops in their own homes, they had to pay for the expense of housing and feeding the soldiers. The quartering of troops eventually became one of the grievances cited in the Declaration of Independence.

The Boston Tea Party destroying tea in Boston Harbor on December 16, 1773.

An American colonist reads with concern the royal proclamation of a tax on tea in the colonies as a British soldier stands nearby with rifle and bayonet, Boston, 1767. The tax on tea was one of the clauses of the Townshend Acts.