Period of extremely high unemploymeht and low economic activity experienced by the world between WWI and WWII.

Correct answer is Great Depression.

Explanation:

After WW1 economies of certain countries were practically destroyed. Unemployment was high, people were starving, diseases were raging.

The height of the crisis happened in 1929, when the stock market crush. It marked even greater crisis, that spread across the globe, known to us as Great Depression.

It mostly ended when Roosevelt introduced his New Deal.

answer; /// i believe that they became successful farmers; ///////////////

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion