Drag the name of the type of mining into the box next to the correct description. one name will not be used. a technique that used a trough to separate gold from gravel a type of mining in which minerals were found in loose sand and gravel a technique that involved digging tunnels along the veins of gold and breaking up tons of ore a type of mining that used water under high pressure to blast away dirt, exposing the minerals underneath

true./

? .>

sa/a

ssa

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.