1774 – The discovery of oxygen. 1876 – Colorado became the 38th State to enter the United States of America 1914 -Germany declares war on Russia. 1920 – The Communist …
Read More »1774 – The discovery of oxygen. 1876 – Colorado became the 38th State to enter the United States of America 1914 -Germany declares war on Russia. 1920 – The Communist …
Read More »