Why did Olmec farmers move their farms from time to time? A. As their families grew, people needed larger farms.
B. Maya invaders took over their farmlands.
C. Heavy rains flooded their fields and forced them to find new land.
D. The soil would wear out and could no longer support farming.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.