Spices allowed many Europeans to have more time on doing other things then shopping in the market. Spices allowed food to be kept longer, and so Europeans didn't have to shop as much. They also gave flavor to food that were usually bland
hope this helps
A slave rebellion in Haiti helped the United States double in size at the beginning of the 19th century. The uprising in what was a French colony at the time had an unexpected repercussion when the leaders of France decided to abandon plans for an empire in the Americas. With France's profound change of plans, the French decided to sell an enormous parcel of land, the Louisiana Purchase, to the United States in 1803.
Yes they have been successful
Plants need nitrogen to make proteins I believe
The three things the National Security Act created were "Central Intelligence Agency, National Security Council, and Department of Defense." <span />