you play anyone in france
now in real life the mongols never conqured india if u conquer ur safe! then new plan, for world conquest, stay still for 200 to 300 years, do nothing at all save money. now buy a hella a lot of mercianies conquer all of india (if u havent already ;) ) and all of russia

now after doing the steps above u must go to sweden or norway to find ur norse tutor they will teach the ways of norse to ur heir concubines runstone everywhere! reform anyway how that's ur own choice ;)

now reformed norse you must go country to country raiding with thousands of merceranies you teach the word of odin