Where did the Lewis and Clark expedition begin? Hint, "the gateway to the West".

Sole i will mark brainlist to who answer

Match the events to the impact they had on africa during the late 19th century 1.colonization of the congo 2.berlin conference of 1884 3.berlin act of 1885 settled tutorial disputes between european nations prohibited the slave trade in africa marks the beginning of scramble for africa

Which item best completes the chart?