Answer:
the united states did not have a direct plan to assemble its army in world war 1. they had no process to supply and support their army unlike Europe.
C
ignore
Too short of an answer /20chars
A main cause of the trade was the colonies that European countries were starting to develop. In America, for instance, which was a colony of England, there was a demand for many labourers for the sugar, tobacco and cotton plantations. Paid labourers were too expensive, and the indigenous people had largely been wiped out by disease and conflict, so the colonisers turned to Africa to provide cheap labour in the form of slaves.
The answer is the first choice.
Tabacco was a major cash crop for a very long time, even now the crop still exists. Native americans would also use this crop, ect..
