I need to do at least 2 to 3 sentences for each question

What do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization?

Which of the following are details about the compromise of 1877? election results in a couple of states were in dispute and too close to call. samuel tilden would be given the win in exchange for the removal of federal troops. the presidential election was close between rutherford hayes and ulysses grant. it was agreed troops would leave the south in exchange for a hayes victory.

What two advances did europeans borrowed from china