Population is both a resource and a burden, so how to make good use of the population of their own countries and nationalities is the top priority of the major powers. As a result, many diametrically opposed policies were born, with the Spartans and Romans being typical eugenics, while ancient Chinese regimes such as the Yue Kingdom encouraged procreation and were typically multi-breeding. Regardless of how these policies are operated, the premise is that the country and the nation have enough core population, if the population is insufficient, it will face the situation that it is difficult for smart women to cook without rice, and even the largest empire will encounter a crisis of extinction.
The first empire to encounter population problems was Rome, which can even be said to be an irony. Because at the time of the rise of the Romans, the biggest grievance of the Hellenistic kingdoms was that the Romans did not speak martial arts and crushed themselves by virtue of their demographic advantages. When there were only 328316 Roman citizens, they were stunned by the advantage of human resources (and the number of allies nearly twice that of Rome, which was nearly four times that of the Hellenistic kingdoms such as Seleucus) to crush the Greek city-states and Hellenistic kingdoms. By 90 B.C., the Roman Republic had converted a large number of allied populations into hukou books, and Roman citizens had more than tripled in one year, and the number of available war populations had become 900,000.
Rome suffered the demographic dividend of the war, and the collapse of the Roman Empire was also the result of the loss of the demographic dividend. During the Roman Empire, the roman concept became that of all the inhabitants of the empire, but the population of the Roman Eagle Banner was decreasing. Wherever the Roman army went, it broke through thousands of towns, slaughtered millions of foreign men, pushed countless foreign idols (in classical times this meant that all the inhabitants of the city lost their rights), brought back millions of foreign women, young and beautiful foreign women became slave girls that Roman citizens could push at will, older foreign women became nannies valued by middle-class families in Rome, and married men and women in Rome were liberated from the bondage of marriage and played very well from top to bottom.
Julia the Great, daughter of the Roman Emperor Octavian, in order to fight against arranged marriages, often accepted men's coins in public and served the Roman adulterers like a lady; Mesarina, the wife of the "Foolish Emperor" Claudius, not only played as a guest lady herself, but also had an alias in the brothel roster, and was the champion of the entire city of Rome; Caligula and Nero, the two dragons and phoenixes, also opened brothels in the palace, allowing the wives and daughters of the Roman nobles to make cameo appearances. Roman folk also have The Ceres Festival, where misses are free, the law also allows guests to rape misses, and young people in Rome even form groups to prostitutes in brothels (at least to beat the security guards).
Roman dramatists, gladiators, and maids also made cameo sexual service, and the whole of Rome was a very yellow and violent scene. This gave birth to two extremes, on the one hand, the Romans played a lot of fun, the legal fertility rate decreased, and the Roman nobles had to find a large number of people who looked good as adopted sons in order to inherit the family name. On the one hand, rome gave rise to the Stoic and Christian faiths, and a large number of Romans went from one extreme to the other, believing that it was shameful to satisfy their desires and to be single dogs for a lifetime. By the end of the Roman Empire, the Roman army was full of foreigners, and even the generals of the Janissaries were foreigners.
In the late Roman Empire, the roman concept was popularized to the peoples of all races "of faith brought to the Romans by the holy apostle Peter", and all "orthodox Christians" were equal to Rome. Rome's population seems to have expanded by eight figures, but the core ethnic group has long been submerged in the long river of history, and the veterans who fought with Malleus, Caesar and others have all been cheap for foreigners.
In the last moments of the Western Roman Empire, the "last Roman" Aetius was the daughter of a famous Gaulish man, the father Gaudengius had a Roman military leader of Germanic blood, and the last Roman Emperor Romulus Augustus was also a warlord of Germanic blood. The Byzantine Empire inherited the name of Rome, but the emperors were all descendants of foreigners, the famous Justinian the Great was a native of Spartacus, many Armenian military leaders simply established the Armenian dynasty, and the language of the empire changed from Latin to Greek. This is equivalent to the name of the whole of China being taken away by the cosmic powers and Vietnam, and Chinese has become a dead language.
Modern France is a different story, and the result of having fewer children is a big step backwards in the battle for supremacy. At the beginning of the 18th century, France was still the most populous country in Europe, and although it also lost the war, the surrounding countries could not form a group of KO. But by the late 19th century, France's population growth could be said to have napoleon tears when he saw it, and Louis XIV sighed when he saw it.
The population of France was 29.5 million in 1800, only 35.7 million in 1850, and by 1911 the population of France had increased by less than 4 million in 61 years, pushing the population to 39.6 million at a net increase of 60,000 yuan per year (a figure that could be swallowed up in a day at the Battle of the Somme). The share of the French population in Europe fell from nearly 30% during the louis XIV period to 9%. From 1840 to 1900 France grew by only 14 percent, while the population growth rate during this period increased by 78 percent for the British and 57 percent for Germany, the target of French revenge.
The French were not economically bad in the late 19th century and early 20th century, and it was still a fiery cooking scene, so that five percent of the population in France at that time was immigrants from countries such as Italy and Belgium. France has a small population, and the biggest constraint is real estate. The townspeople in Paris and elsewhere were eager to buy houses, and the real estate market in Paris flourished since the time of Napoleon III, where everyone was saving money for a down payment and becoming a landlord (so much so that Engels issued a warning that many disciples and grandchildren in later generations would forget), and having children was the least wanted waste of the middle class.
French rural small real estate prevalence, do not look at the average French farmers small estate, the output value is not low, France is Europe's largest producer of wine and other high-quality agricultural products, vineyard skilled workers income is very impressive, in order to ensure that the industry is not diluted by multiple sons, French farmers almost invariably choose birth control. France's population growth was slow, but there was also the political correctness of Germany, and France was emptied for a generation in World War I. In the 20 years after the end of World War I, France added only 800,000 people, while Germany increased by 8 million...
The key to the competition of ethnic groups is the competition of population quantity and quality, but if the population of their own ethnic group is in danger, even the largest country and mountains can only be cheap outsiders.