Cold war<span>competition between the United States and the Soviet Union for world power from 1945 to 1991</span>
Answer:
modern history began in the 16th century, and we are in the 21st
so that is about 5,000 years
Explanation:
In Earth's climate system, positive feedback's tend to amplify changes in the system, and negative feedback's tend to encourage the system against change. Having a positive feedback gives the newest updates and brings the problems on the table, thus changes are always a must when there's proof that suggest there's big problem, but when the feedback is negative, lacking, then there's not pressure for changes, so anyone who has interest in not changing will push for that, thus encouragement of taking no changes. <span />
