Carbon dioxide. Greenhouse gases trap heat
        
             
        
        
        
The answer is B. to draw investment from Western oil companies 
 
        
             
        
        
        
2 and 3. The Louisiana Purchase was conducted in 1803 between the United States and France. Finally, <span>The Treaty of Guadalupe Hidalgo in 1848 ended a dispute between the United States and Mexico, ceding the land of Texas to the United States. </span>
        
             
        
        
        
Salutations!
<span>What are the benefits of fair trade?
The term "fair" indicates that everything is even enough. Fair trade is very crucial for the producers and the consumers as well. The following are the examples:
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</span>→ Better prices. (Reasonable and cheap)
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</span>→ Decent working conditions. Working places are hygienic for the workers.
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</span>→ Local sustainability. Resources are used very wisely.
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Hope I helped. </span>