Why did tensions develop between Great Britain and China in the mid-19th century?
A. British traders refused to stop breaking Chinese laws against
selling opium
B. China threatened to cut off trade with Great Britain if Christian
missionaries came to China,
O C. Great Britain refused to send troops to China to help fight internal
rebellions.
D. Chinese traders refused to pay fair prices for British manufactured
goods

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.