Answer:
Disease and weather
Explanation:
The two factors that forced the Mongols to withdraw from Southeast Asia were disease and weather. The Mongols had conquered enourmous expanses of land in a great variety of territories. However, Southeast Asia proved very challenging because of its weather. The Mongols were not used to fighting in such wet and hot weather. Moreover, tropical diseases were abundant, and this proved to be very challenging for the Mongol army.
The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The historical events prior to the expansion of sea travel that contributed to the Growth of interconnection across oceans during the period from 1450-the 1700s were the financial support that King of Spain Ferdinand Magallanes and Queen Isabella del Castille gave to Portuguese sailor Cristopher Columbus to explore a new sailing route to the West Indies.
Columbus had a crew divided into three ships: "La Niña," "La Pinta," y "La Santa María. This trip ended up being a success when Columbus discovered America on October 12, 1492.
After this major event, European exploration led to dominance in the Atlantic and Indian Oceans and over the people in Africa and the Americas.
The open door policy impacts lasted for decades and they have three major impacts; increase Chinese backlash against foreigners. Chinese and American conflict with Japan. Increased US interest in East Asia