The two discoveries that brought a revolution in early man's life are:
1) Agriculture - It helped the early man to produce its own food. this innovation made possible new flux of innovations and ideas the husbandry and domestication of all modern cattle and pets (except dogs), the formation of soldiers and wars, the money, the origin of religion, writing and all the very basis of modern life. Developing all these new outcomes would be impossible without the cooperation and organized structure of agricultural societies.
2) Language and paintings - Language helps them to communicate with each other and painting which they did at that time helped Historians today to know about their life, language, etc.
To claim the lands and present them after the king
The 1920’s was marked by drastic events in the U.S economy.
After a decade of very high economic growth and boom in manufacturing (the
Roaring Twenties), the Wall Street stock market began to slide down on October
24, 1929, and by November stock prices lost as much as 40% of its value. The
drop was caused by overproduction of agricultural produce. The resulting
oversupply caused farmer’s incomes to drop. People also purchased stocks using
borrowed money,which contributed further to the slide.
