Checks and balances
supreme court is granted power to overturn congressional laws that violate constitution. the courts however should exercise judicial constrain while doing that, to ensure the do not injure the principle of separation of power. usually they all restrain themselves to comparing whether the new law contradict the establishment clauses which would require a referendum, or the wording and legal process was followed. This ensures congress is checked.
I believe it's "<span>it breaks the social contract and people can create a new government."</span>
The one that differentiates Christopher columbus from Bartolomeu Dias is : Columbus planned to reach Asia by sailing west across Atlantic Ocean, while Dias hope to reach Asia by sailing around Africa and through the Indian Ocean.
Hope this helps
