Question

colonists dump tea from the british east india company into boston harbor.
action
some americans argue that only colonial assemblies can tax colonists.
members of parliament demand that the british government raise more revenue.
parliament passes the tea act, which allows the british east india company to send its tea to the colonies without paying a tax.
response
parliament passes the declaratory act, which states that only parliament can tax the colonists.
parliament passes the townshend acts, which place new taxes on goods imported into the colonies.
parliament passes the coercive acts, including acts to close the port of boston and limit the power of the massachusetts colonial government.

Explanation:

The actions and responses describe key events and reactions leading up to the American Revolution. The colonists' actions like dumping tea and arguments over taxation led to British Parliamentary acts as responses, escalating tensions. The last - blank action that led to the Coercive Acts was the Boston Tea Party (colonists dumping tea from the British East India Company into Boston Harbor).

Answer:

Colonists dump tea from the British East India Company into Boston Harbor.