A)The Mexican population pushed them north, to stay further away from the capital.
Federal budget is dependent on many factors one of which is the priority of the state. When there is a need to increase the level of defense, the budget for defense must be increased. This increase in budget translates to a decrease in budget in another area. If the budget for transportation can be reduced and still be able to implement the planned projects, then the budget for transportation will be reduced.
The lowest literacy rate is India since it has the lowest GDP.