James Madison promised the Bill of Rights to the people even before the constitution was ratified. The Bill of Rights protects the basics freedoms of the people like freedom to practice any religion, the right to protest, the right to privacy. If you want a list of the first 10 amendments of the constitution I suggest you look them up.
Border ruffians contributed to the "bleeding Kansas" problem by actively terrorizing citizens of the free state. The Border ruffians came from the slave state of Missouri and in an attempt to change attitudes through force, they would actively terrorize opponents to their pro-slavery stance. The "bleeding Kansas" problem occurred as is was decided around the time of 1950 that the settlers themselves would choose whether Kansas was a free or slave state. This resulted in a flood of people from both sides rushing to settle Kansas in order to gain another state that aligned with their particular values. The period lasted until about 1959-60 and animosity persisted through the civil war.
The correct answer is the Battle of Saratoga.
The Battle of Saratoga, which took place in October of 1777, was considered a turning point for multiple reasons. For one, it was one of the first times that the American colonists were able to get the British military to surrender. Another reason why it is a turning point is this battle showed France that the American colonists actually had a shot at defeating the British. After this battle, the French send support to the American colonists. This support from the French is critical to the success of the American colonists in the Revolutionary War.
Because of the Natives there that were not friendly with them.