Which was used to by wegner to establish continental drift?
a. evidence of tidal forces
b. the existence of land bridged
c. rock samples from the mantle
d. mesosaurus fossils

Those who hope that land reform will end the problem of mass poverty and social inequality throughout middle and south america often cite as one of the causes of the problem. a. asian immigrants b. the indigenous population c. european systems of landholding d. the power of the roman catholic church