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 involved two very large alliances, but the main countries which were are the center of those opposing alliances were the United States of America, and the Soviet â¦ Union. 1  The History of Fort Lee Virginia Fort Lee in Virginia goes a long way back in American history.