While hiking in the grand canyon of northern arizona, you stop and observe an outcrop that exposes three different sedimentary rock types. on the bottom is a layer of shale, which is overlaid by a layer of limestone, which is in turn overlaid by a layer of sandstone. this stratigraphic sequence indicates a or a in sea-level occurred in this location in the past.

Which statement best describes evidence of a mulitcultural mix in east africa? a. because of what he learned during his pilgrimage to mecca, mansa musa was able to build a center of islamic scholarship. b. the traders of ghana brought back with them slaves from the mediterranean who taught the ghana rulers about christianity. c. clans were made up of lineages that were descendants of multiple ancestors from different regions of africa. d. swahili became a language made up of words spoken by traders along the coast of the indian ocean.

What policy did "jim crow" laws put in place? black codes integration segregation 2. the supreme court case that established the doctrine of "separate but equal" was dred scott v. sandford plessy v. ferguson brown v. board of education 3. the supreme court case that overturned the doctrine of "separate but equal" wasdred scott v. sandford plessy v. ferguson brown v. board of education

Why would it be hard to live in a city state