The U. S. Senate asks the president to testify before a committee. The president responds that giving testimony would interfere with his job as chief executive. The U. S. Congress brings charges against the president for refusing to appear before the committee. The U. S. Supreme Court hears the case and rules against the president. Which principle of government is shown in this scenario?

The correct answer is Separation of power

Explanation:

The separation of powers is an approach to governing a state. Under it, a state's government is divided into branches, each with separate, independent powers and responsibilities so that the powers of one branch are not in conflict with those of the other branches.

here are some events that to cause increased conflict between the north and south

1) mexican cession- gaining modern day california, utah, arizona, and new mexico from mexico. caused southern and northern politicians to fight over whether or not there would be slavery in these newly acquired territories.

2) uncle tom's cabin- this famous book described the cruelty of slavery in the south during the antebellum period, causing more northerners to support abolition and southerners to resent the book as they felt it unfairly depicted southern society.

3) kansas- nebraska act- disagreements over whether or not kansas and nebraska would be free or slave states caused issues between northern and southern politicians in congress.

4) bleeding kansas- this fighting took place in kansas after congress allowed this territory to vote on whether or not they would have slavery. citizens were killed and buildings were destroyed during this fighting.