Short answers, pulled from the story.
The Kingdom of Serbia officially began on the 6th of March 1882 when Milan I accepted the crown in Belgrade. This event transformed the country from a principality into a kingdom fifteen years after Ottoman troops withdrew in 1867.
The zadruga system was an extended family unit where property and authority belonged to the collective rather than individuals. A single household could contain twenty to forty people who shared food, work, and decision-making power under the rule of a grandfather or father.
Serbia emerged from the Second Balkan War with an eighty-one percent increase in land area. The population swelled from 2.9 million to 4.5 million people while the state gained access to Vardar Macedonia but remained landlocked due to Albania blocking routes to the Adriatic Sea.
Soldiers stormed the Royal Palace in Belgrade on the night of the 28th to the 29th of May 1903 and assassinated King Alexander I and Queen Draga inside their chambers. Other members of the Obrenović family were shot dead alongside the royal couple ending four decades of rule by that house which had governed since 1817.
National debt skyrocketed from 16.5 million francs in 1880 to 903.8 million francs by 1914 as economic growth remained stagnant despite rail construction. A tariff war known as the Pig War erupted between 1906 and 1909 leaving Serbia financially crippled while preventing meaningful industrial development during the late nineteenth century.