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 trade was encouraged with foreign states because they offered hospitality to foreign traders at Chinese ports.
•the invention of new medicines
•the establishment of a postal system
•there was development of a commerce in the region along the Silk Road.

How are diamonds and graphite the same? how are they different? a. both diamonds and graphite are made entirely out of carbon. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite. b. both diamonds and graphite have atoms that are arranged with flat layers. they are different because only graphite are made entirely out of carbon. c. both diamonds and graphite have atoms that are arranged with three-dimensional structures. they are different because only diamonds are made entirely out of carbon. d. diamonds and graphite have no similarities. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite.

Which best describes the impact of the crusades on european exploration?

Which european nation had the most dominant navy during world war i