Answer:
His efforts paid off, with much of the Song imperial family surrendering to Kublai in 1276, but the war continued for another three years. In 1279, Kublai became the first Mongol to rule all of China when he conquered the last of the Song loyalists.
Siblings: Hulagu Khan, Ariq Böke, Möngke Kh...
Nationality: Mongol Empire, Mongolia
Died: February 18, 1294
Answer:
suddenly..........gradually
Explanation:
Acute onset happens when symptoms are developing suddenly and if symptoms develop gradually, the disorder has insidious symptoms.