Final answer:
The expansion of industry in the United States in the 1800s was influenced by immigration, transportation, and resources. So, the correct answer is option d.
Step-by-step explanation:
The expansion of industry in the United States in the 1800s was influenced by immigration, transportation, and resources. Immigration led to technological advancements as skilled workers from countries like Britain, France, Germany, and China brought their expertise to American industries. Transportation, particularly the development of the transcontinental railroad, facilitated the movement of goods and people across the country.
Lastly, the abundance of natural resources such as coal and iron fueled the growth of industrial sectors like steel manufacturing. Therefore, the expansion of industry in the United States in the 1800s was influenced by immigration, transportation, and resources.
So, the correct answer is option d.