Could you check this question it goes along with the passage.

Passage:
Manufacturing establishments become a blessing or a curse according to the facilities which they create for acquiring a living, to the necessary articles which they provide, and the general character which they produce. To set up and encourage the manufacturing of such articles, the use and demand of which produces no immoral tendency, is one of the best and most uses which can be made of capital. The moral manufacturer, without the power or dispostiton to overreach, is in reality of a benefactor.

Question: The writer believes that manufacturing is a good use of what resource as long as the company produces items that are necessary to consumers and that promote the public good?

Is it capital which is money. I'm not so sure though.

You're right.

Yes, you're correct. In the given passage, the resource that the writer believes is a good use for manufacturing is capital, which refers to money or financial resources. The writer mentions that setting up and encouraging the manufacturing of necessary articles, which do not promote any immoral tendencies, is one of the best and most beneficial ways to utilize capital. So, the writer expresses the belief that investing capital in manufacturing can be a positive and beneficial use of resources, as long as the produced items are necessary to consumers and promote the public good.