They have been around since the birth of the earth's atmosphere.
Spelman College, Atlanta.
Hope this helped
Answer: The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.
Answer;
Iron Curtain;
When Hungary opened its borders, it created a "hole" in the iron curtain.
Explanation;
Hungary was the first country to punch a hole in the Iron Curtain.
<span>This meant that many refugees from Eastern Germany who had fled to Hungary, were going to leave and move to Western Germany. They would take this trip by going through Austria (neighboring country of Hungary) to reach Western Germany. Mikhail Gorbachev was personally outraged by this, stating that Hungary had not asked him before taking this measure.</span>
