The practice of vertical integration contributed most to Andrew Carnegie's ability to form a monopoly. Vertical integration is a process of combining different stages of production such as manufacturing, supplying, distributing, retailing, etc, under the umbrella of one company.
This question is a little ambiguous as it doesn't give reference to what 'favourable' is but I've attached a diagram that depicts the different types of climate in Brazil to help.
(This is more of a geography question than history)
