Income is the money an individual (or business) receives in exchange for providing a good or service; wealth is the abundance of the former.
As Marx convincingly pointed out: wealth or capital can and is used to control means of production in order to make large profits with the goods or service provided by those who don´t have any control.
The Mongol invasions and conquests took place during the 13th and 14th centuries, creating ... Genghis Khan forged the initial Mongol Empire in Central Asia, starting with the ... the Mongol Khan Hulagu during his conquest of the Middle East.