Answers

2016-03-19T10:33:18+05:30
Vietnam was ruled by french rulers.
they encouraged the cultivation of rice in vietnam by building cannals and making more land available for cultivation.they encouraged landlords for cultivating rice.during that time vitnam was the 3rd largest exporter of rice in the world.
0
2016-03-21T14:59:54+05:30
During 20 century French started developing their colonies for more income
this is main reason for boost of rice cultivation in vietnam
0