The most important duty of the president is to ensure that all laws are to be faithfully executed. It is impossible for a country to be secure without all proper laws in place. For the second question, the answer is 8 years. A president can service for 2 terms of 4 years as an acting president.
The Vice President who is also the President of the Senate.
Under the Constitution, the vice president serves as the president of the Senate and presides over the Senate's daily proceedings. The VP also certifies who is officially elected as president
B because man of steel is the meaning of Russian
The two minor indian kingdoms studied in the chapter was : Pandya and Pallavas
Both Gupta and Mauryan were considered the most well known and well established kingdoms india, so that can't be the answer<span />