Jewish people had only been in England since the Norman Conquest, invited to settle there by William the Conqueror. From the late eleventh century onwards, the Jewish community quickly became an essential part of the English economy: Jews were permitted to loan money at interest, something Christians were forbidden from doing. Jewish settlements in important towns such as London, Norwich and Lincoln prospered. England’s Jews were skilled individuals, who worked as doctors, goldsmiths and poets. But lending money was their primary source of income, and Jewish people were fundamental to the working of the English economy. Jewish lenders provided loans for many of the most important figures at the royal court (for the purchase of castles, payment of dues to the king, etc). They were also exploited by kings, who were often in dire need of money.
Jewish people were expelled from England because, Jews could no longer loan money for a living and would have to convert to being merchants, labourers or owning farmland.
Ideologically and culturally the Mongols resisted assimilation and legally tried to stay isolated from the Chinese. They thought Confucianism was anti-foreign, too dense had too many social restrictions. The Mongol rule became increasingly less stable after 1294 when Kublai Khan died and succession became a problem.
Answer: to seek better employment and to seek better education. Explanation: the 20's and 30's still had many white men acting heavily racist against blacks, especially in the south. they fled north to hopefully find better opportunities