Bulgaria has vast land. Why did the population decrease by more than 7 million after World War II?

In fact, the population of Bulgaria did not increase after World War II, but decreased, which is normal, because there must be some population loss after the war. If there is war, there will definitely be death, and a large number of people may have lost their lives because of war. At the same time, men in these countries love drinking very much, so their life expectancy is relatively short. In addition, the dawn of entering Bulgaria is not much, so their population is only over 7 million.

In fact, the population of many European countries is relatively small, and Bulgaria's population of more than 7 million is not small, but more importantly, the birth rate of many European countries is in a negative growth state, and Bulgaria's economic situation is not very good, because it was an agricultural country before it was controlled by the Soviet Union, and a complete industrial system was established after it was controlled by the Soviet Union, but Bulgaria's economic situation has not developed well. If there is no good economic foundation, how can local residents choose to go?

In addition, due to Bulgaria's geographical location, there are not many immigrants who have entered Bulgaria to take root. First of all, Bulgaria's terrain is high in the southwest and high in the middle, only low in the north and southeast, which means that only the north and southeast are suitable for people to live in such a large area, because life is not so convenient if the altitude is too high.

And in World War I, Bulgaria was on the wrong side. He thought Germany was very powerful, so he followed Germany in mischief. But after the defeat, the Aegean coast, which originally belonged to Bulgaria, was assigned to Greece. If there is still a sea of love in Bulgaria, it will be very convenient to enter and leave the country, and immigrants will enter Bulgaria from the Aegean Sea to live. But now their access is restricted by Turkey, which is equivalent to a closed state. Many people want to immigrate without considering Bulgaria, so the population of Bulgaria has not increased sharply.