You didn't really provide the letter out of which we should be able to deduce the benefits. However, Crusaders would say that the benefit of the crusaders were that they regained the holy land and could also profit out of this either by looting and pillaging neighbouring muslim villages or because they thought they were closer to God this way.
They looked for three main things: Gold, glory (aka more land), and god (spreading religion). The main reason however was they wanted gold.
He passed NAFTA (North American Free Trade Agreement)
Automobiles would cost more money because the companies that produce them could only import a certain amount in a certain amount of time so the demand of them would increase thus increasing the cost.
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