The French and Indian War began in 1754 and ended with the Treaty of Paris in 1763. The war provided Great Britain enormous territorial gains in North America, but disputes over subsequent frontier policy and paying the war's expenses led to colonial discontent, and ultimately to the American Revolution.
FDR and Johnson only had brief success. For FDR, most of that success was confined to his first term or to wartime.
Answer:
It changed them in many ways. They went from food-gatherers to food-producers. They grew food instead of hunting for them. Agriculture helped them in many ways.
