sentences:  Approximately 31–35% of questions focus on political history, 13–17% focus on economic history, 20–24% focus on social history, 13–17% focus on intellectual and cultural history, and 13–17% focus on foreign policy.The questions also vary with respect to time period; approximately 20% focus on period of the Pre-Columbian era to 1789, 40% focus on the period between 1790 and 1898, and 40% focus on the period between 1899 and the present day.For each of the multiple choice questions, students receive 1 point for every correct answer, lose of a point for each incorrect answer, and receive 0 points for questions left blank.