It failed because the people who were indentured servants eventually ended their servitude and left to build their own families and farms. They were also more rebellious then the Africans who were imported from Africa. It wasn't worth it to take Europeans when Africans were better workers.
The correct answer is: an extreme political ideology.
Indeed, the movement’s ideology was a very dogmatic blend of several ideologies and outlooks. They were heavily Stalinist and Maoist in their leftism; extremely xenophobic against both foreigners and national non-Khmer minorities and extremely agrarian.
With regards to their Stalinist/Maoist outlook they believed in absolute obedience to the party and its leaders, with a set of inviolable strict rules and laws and the belief that the ends justified any means.
They loathed national minorities as they saw them as a stain on their national Khmer purity and they despised foreigners because they refused to ever be colonized again, whether by Westerners or Asians.
They also considered that urban, capitalistic society was a disease and sought to eradicate it by eradicating its people.
1, 1863, three years into the war. ... Now the war was about ending slavery, which led to the tide changing in favor of the Union under the leadership of Ulysses S. Grant. The Emancipation Proclamation didn't free all slaves, just those living in Confederate states. Hope that helped!!
Answer:
1. The Epic of Gilgamesh
2. Noah and the Flood
3. Manu and the Magic Carp