This nest building behavior is instinctual for male bettas and it is not necessary to have a female present to observe your betta building his nest. Most males will blow bubbles but the rate and size of the nest seems to depend on the individual male and possibly, other factors like age, health and water parameters.
Berlin was always the centerpiece of the Cold War and, more often than many remember, very nearly the front line of real combat. At the end of World War II, the city was divided into four sectors, each occupied by one of the four allied armiesâU.S., Soviet, British, and French.
The Cold War. The seeds of hostility between the United States and the USSR began near the end of World War I. The Bolsheviks (later Communists) overthrew the existing Russian government. In December 1922 began the formation of the Union of Soviet Socialist Republics (USSR) under Communist control.n July 16, 1945, the creation of the first atomic bomb came to fruition in the United States and was tested at Alamogordo, New Mexico at a site called Trinity. The atomic bomb had two objectives: a quick end of World War II and possession by the US (and not USSR), would allow control of foreign policy.