Nature and nurture play a significant role in determining the life of people with regard to their intelligence level. Intelligence is the unique way in which a person can be able to come into an understanding of problems mentally, respond to them and...Factors-affecting-the-human-intelligence …

Over the 18th and 19th century, United States’ presidents were as not influential as they are today. The presidents did not have the role of being the world leader. However, after the United States emerged as the powerful entity in the Spanish A...The-presidency-in-the-twentieth-and-twenty-first-century …

CLIMATE CHANGE Climate on earth has changed over time. Seven cycles of glacial advances and retreat have happened in the last 650,000 years ago with the last ice age ending about 7,000 years ago which marked the start of modern climate era and ...Global-climate-change-related-impacts- …