<span>Soon after gaining independence from Spain in 1821, Mexico opened its northern coastal region of California to foreign trade. American vessels from the east were soon engaged in lucrative commerce with the Californios, Californians of Spanish or Mexican descent. Offering such necessities as cooking utensils and boots, as well as luxuries such as brandy, the Americans reaped profits of 200 to 300 percent. In exchange, the Californios exported cowhides produced on their vast coastal ranches.</span>
Answer: Boston massacre.
Also, trade cutoff from Great Britain.
Explanation:
One of the reasons Americans believe they were on the brink of loosing their rights and freedom is the Boston Massacre.
The Boston Massacre occured during late September of 1768, when British soldiers had been sent to the Massachusetts colony. The soldiers harassed women and children daily. During the time, there was cut off of trade with Great Britain which makes goods to be scarce and higher prices were being charged for them.
On the 5th of March,1770 there was Verbal attacks from the colonist which gave way to physical confrontations, which later led to soldiers firings. These, in turn lead to the Massacre. Which is popularly known as the Boston Massacre.