Federalism is the sharing of power between national and state governments
Well seeing that the colonists were beaten so badly by the British at Bunker Hill, if they had surrendered, lives probably would've been saved
The most basic definition of fertile is "being able to produce offspring". In humans this means being able to have children, and in other species, such as plants, it means being able to reproduce: by producing seeds for example.
That statement is false
Modifications indeed happens from time to time, but it happens rarely. In fact, most of the time, courts on current time would use the decision made by the court in the past in order to ensure the same decision would be applicable to similar cases.