Short answers, pulled from the story.
The East End of London began to emerge in the Middle Ages with initially slow urban growth outside the eastern walls. John Strype's 1720 Survey of London provides the first known written record of the area as a distinct entity, describing it as That Part beyond the Tower.
Metalworking industries are recorded between Aldgate and Bishopsgate in the 1300s involving bell founding, braziers, arrowsmiths and others supplying ships. Shipbuilding for the navy is recorded at Ratcliff in 1354 with shipfitting and repair carried out in Blackwall by 1485.
From late 19th century large African mariner community established in Canning Town as result of new shipping links to Caribbean and West Africa. From late 1950s local Muslim population began increasing due to further immigration from Indian subcontinent particularly Sylhet in East Pakistan which became part of Bangladesh in 1971.
By 1890 official slum clearance programmes had begun including creation of world's first council housing the LCC Boundary Estate replacing neglected crowded streets of Friars Mount better known as The Old Nichol Street Rookery.
On the 4th of October 1936 around 3-5,000 uniformed blackshirts British Union Fascists led Oswald Mosley inspired German Italian fascism assembled begin anti-semitic march through East End. Up to 100,000 East Londoners turned oppose them resulting three-way clashes fascists anti-fascist opponents police leading to engagements together known as Battle Cable Street forced fascists abandon march conduct parade West End instead.