Answer:
Option 3: The embargo cut off access to British goods, so more factories were built in the United States.
The Embargo Act of 1807, followed by the War of 1812, had a significant impact on American industry. These events disrupted trade with Britain and other European nations, leading to a scarcity of imported goods. As a result, the United States had to rely more on domestic production, which led to the growth of its own manufacturing industry. This increased demand for domestically produced goods helped stimulate the development of factories and manufacturing in the United States during this period. So, option 3 is the most accurate statement regarding the effect of the embargo and the War of 1812 on American industry.
Step-by-step explanation: