Which of the following makes up a Current Transfer?

A. tariff revenue

B. international loans

C. demand for domestic goods

Which four of these developments were made under mongol rule during the pax mongolica? the extension of the grand canal in china the spread of christianity the spread of weapons that used gun powder the invention of new medicines the establishment of a postal system the invention of geometric models of lunar motion

Which best explains parallel forces?

Space is not completely empty. there are small particles in space. what happens when these particles come together?