I am okay. I am not an expert but I can help
When workers form a union, they are exercising a basic civil right. ... The statutory right to form a union and engage in collective bargaining is necessary to ensure that workers can continue to exercise their civil right to associate with other workers on issues of mutual concern.
By reading and through context, my guess would be through integration.
Answer:
metals and minerals
Explanation:
The Canadian shield was the name of a region that is located in North-Eastern part of Canada. The water and soil quality in this region is generally unsuited for agriculture, but this area possess large quantity of metals and minerals
This made Canadian Shield became the major producer for mining related companies. (Especially producers of coppers, Gold, Nickels, Zinc, and Diamond.) This region alone accounted for more than 20% of Canadian's economy.