A key factor that pushed Mexicans to emigrate was not being able to support themselves at home, politics also affected them.
        
             
        
        
        
The first one ::::::::::::::)
        
                    
             
        
        
        
Plowing the contour of the land to have minimal soil erosion. <span>It involves plowing across hill slopes to prevent soil erosion.
Hope this helps.</span>
        
                    
             
        
        
        
In the preamble of the Constitution, the principle which is best expressed is that we are a country run by the people. We are not ruled by a monarch, an aristocracy, and a select few people. The American citizens have the ability to govern themselves and elect representatives that best reflect their views.