The primary events that led to the United States declaration of war against Germany were the Zimmerman Telegram and Germany's proclaim intention to resumeunrestricted<span> submarine warfare. </span>
Following WWI in North America and most of Europe there was a recession that led to economic decline. The recession in the United States did not last long and was followed by nearly a decade of major economic growth that made the United States the most powerful economy in the world.
The house of wisdom was founded by Al- Ma’mun and build in Baghdad. It’s main purpose was to translate literature and knowledge.
Hope that helped :)
