What were the 3 major causes of the 7 year war

In the early 1750s, French expansion into the Ohio River valley repeatedly brought France into armed conflict with the British colonies. In 1756–the first official year of fighting in the Seven Years War–the British suffered a series of defeats against the French and their broad network of Native American alliances.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.