Two world wars, extreme religious political ideologies(Communism, Fascism and Nazis) plagued the 20th century and divided the world into two halves East and West for most of the 20th century. Huge technological advancement during 20th century especially after World War 2.
21st century Global terrorism and endless war on everything. Immigration is a major worldwide problem. Global warming, climate change and depletion of resources. Rise of totalitarian Chinese regime. Continued technological advancement.
Something big will happen in the 21st century. Just you all wait and see.







