C. Fishing
I think fishing would make sense due to living in a river valley.
Answer:
No agriculture can take place in dry lands due to lack of water.
Explanation:
This is the statement that is not true of dry lands. It is true that dry lands are generally not suitable for large-scale agriculture. However, this does not mean that no agriculture can take place in them. People who have lived in dry lands for generations often farm in a small scale. Moreover, they grow crops that are resistant to this lack of water. Finally, some dry lands are significantly productive due to the use of artificial irrigation.
a large waterfall with rapids would be the right answer
The Russian Empire in 1917, the German and the Austro-Hungarian in 1918, and the Ottoman in 1922 were all ended in WW1.