One of the main reasons why foreign investment in Persia increased in the early 1900s was because the world became more dependent on oil and other fossil fuels--due to Industrialization--many of which existed in this Middle Eastern region.
I have chose primary source to be the answer. Check out the definition of "primary source." secondary wouldn't make sense here.
D. The Romans believed it was important to be strong and devoted to protection of the state.
Some of the ways that might slow down the business because of alcohol are the turn down of economic activity due to alcohol effects to the workers' health and performance. The business will also possibly lose its performing workers because of the impact of alcohol on one's credibility and diligence.
The Answer is B., hope this helps and have a good day!!
