The Tea Act upset many colonies because it put a tax on tea; which many colonists enjoyed. Also, all smuggled tea would now be punished so colonists were forced to pay taxes for regulated tea.
The Tea Act angered the colonists because the Tea Act was passed by the English Parliament rather than their own governments and the Tea Act had granted the British East India Tea Company to create a monopoly. They believed it violated their rights as citizens.
The purchase of the Louisiana territory would give them the Mississippi River, the New Orleans port, and land which they would use to harvest and then sell for money.
