The U.S politicians and businessmen worried about the foreign nations controlled economic development so they supported open door policy
The USSR, they launched a satellite in to space called Sputnik in the 1950's
The Nile river had a big impact on trade because it served as a source of transportation. Communities formed along the Nile were more developed.
Salt from the desert was a reliable and profitable resource traded.
Savannas were used to grow crops and the excess from the crops were traded.
The answer is attempt crimes since the crimes were attempted but not completed.
I believe it would be B polis