It popularized trade and competition. For example: Portugal was the main trader of spices.
More than anything, the Spanish were seeking wealth.
Christopher Columbus himself thought that he had reached India: he wanted the wealth from the trade with Indians.
In the beginning, the Spanish hoped for Gold and Silver, later also for other products that could be made cheaper in the New World.
In short: the Spanish were not interested in Mexico but in what the ships could bring from Mexico (again, mostly gold).
Some, very few Spaniards, who settled in the New World were too unhappy in Europe and hoped for a better life.
There is so many reasons but they are complicated to explain
People who must suffer with patience to hide the fear, the terror they have. The white man is obliged to colonize and civilize other races in benefits of themselves. Seek the gain of others and work for the benefit of others. It also expresses to test the pride that is displayed.
Sorry but, Iraq was never involved in World War 1. Don’t know if you mean the Iran-Iraq war...but Iraq was never in WW1.