Because one might have other minerals in it as well
I think this slogan meant that land reform will be given to farmers in the agrarian sector. In The Mexican Revolution, Diaz was not able to breach the gap between the rich landowners and poor farmers in Mexico. Because of this, Madero had challenged Diaz through presidential election
There's three types of plate boundaries:
- Collision plate boundaries (where two or more plates of the same density collide )
- Adjacent plate boundaries (where two or more plates slide against each other)
- Subduction plate boundaries (where one or more plates with lesser density are subducting below the the plate that has bigger density).