trade and economic activity
Hope that helped ^^
Answer:
Stock market crash of 1929, also called the Great Crash, a sharp decline in U.S. stock market values in 1929 that contributed to the Great Depression of the 1930s. The Great Depression lasted approximately 10 years and affected both industrialized and nonindustrialized countries in many parts of the world.
I believe it is the articles of confederation
By conquering large parts of Asia with genghis khan
