It's began with the Spanish American war
It was a land at German-Czechoslovakian border at Sudetes Mountains, where<em> </em>Sudete Germans (Sudendeutsche) have lived. In 1938 Adolf Hitler decited to unlawfully join this Sudetenland to Germany. It was an intro of II World World War which began year later when Nazi Germany invaded Poland.
There was a greater freedom of religion than before.
Answer: Mongols did not necessarily need to expand their territories as much as they did. The pull factor for Mongol imperialism is directly related to the push factors. They may have included climactic and geographic issues impacting the nomadic tribes but most likely were due to the Mongols being enthusiastically militaristic.
