It actually lasted from 618 to 907.....907 - 618 = 289....almost 300 years
For the Louisiana purchase question, it more than doubled the size of the united states. As for the second question I believe the answer would be "Thomas Jefferson was eager to explore the west to ensure the survival and prosperity of the United States"
Answer:
One of the first major impacts of the crusades was that it increased interaction between different societies and groups of people. For instance, the crusades caused the religions of Christianity, Judaism and Islam to clash.
Explanation:
Industrialization moved the economy away from agriculture.