Final answer:
Bacon's Rebellion in 1676 was primarily caused by Governor Berkeley's favoritism towards the wealthy, resulting in higher taxes for the commoners and the decline in tobacco prices.
Step-by-step explanation:
Bacon's Rebellion in 1676 was primarily caused by several factors. One of the main factors was the resentment against Governor Berkeley's rule, as he favored the wealthiest residents over smaller planters and landless tenants. This led to higher taxes for the commoners and worsened by the decline in tobacco prices due to the Navigation Acts and the crown's trade war with the Dutch.