At the beginning of the 20th century the people of Mongolia were primarily engaged in the subsistence herding of livestock.
Under current law, tax-exempt 501(c)(4) organizations are supposed to be "primarily" engaged in social welfare work.
But, in enforcing the law, the I.R.S. decided they need only be "primarily" engaged in social welfare, not exclusively.
It was primarily engaged in the production, refining, marketing, and shipping of crude oil and natural gas.
To receive such status, according to the I.R.S., a group must be "primarily engaged in the promotion of social welfare".
Can art history, a discipline primarily engaged in the study of human creativity, also breach the natural/human history binary?
General Motors Corporation (GM is primarily engaged in automotive production and marketing, and financing and insurance operations.
All retail trade establishments except pharmacies, surgical supply distributors, and stores primarily engaged in the sale of food.
But the I.R.S. has for years maintained that groups meet that rule as long as they are not "primarily engaged" in election work, a substantially different threshold.
Market makers are primarily engaged in the business of assisting clients in executing their desired transactions and are responsible for providing fair prices.
All these groups except the trader Hausa population are primarily engaged in farming and herding (cattle, goats, sheep), but fishing is also important along the riverbanks.
