I need clear simple answers for eachquestions please

Question 4 2 Points State A entered into a treaty with State B relating canceling taxes on imports for both countries for five years. After 2 years, the president of State A lost the election in his country and a new president took control. The new president legislated laws that prohibits complying with the signed treaty. State B claimed that State A is breaching its obligations under the treaty. State A claimed that they are excused because their national laws prohibit them from complying with the treaty. Is State A breaching its obligations under the agreement? Explain Question 5 2 Points State A and State B signed a treaty to settle a border dispute. Both states agreed to the borders as shown in the map used during the negotiations of the treaty. After 2 years, State A objected to the borders after it discovered that the maps used were inaccurate. State B claimed that the treaty has already been signed and came into force and that State A should comply regardless of whether the map was accurate. Is State A's objection on the basis of error justified or not? Explain