Answer:
In 1754, the French built Fort Duquesne where the Allegheny and Monongahela Rivers joined to form the Ohio River (in today's Pittsburgh), making it a strategically important stronghold that the British repeatedly attacked.
Explanation:
It was mostly Ronald Regan who led the re-energized conservative movement of the 1980s. His main points revolved around economic conservatism and non-spending.
Economic development in Europe during the 15th and 16th centuries led to renewed technological and scientific development throughout Europe which continued into the centuries after. New wealth, advancements in ship building, desire for new trade routes, and a greater thirst for understanding and exploring the globe led to greater European exploration at this time.
The European nations met in "Berlin" to discuss how to completely dominate Africa and how exactly to draw the borders of their various colonies, since this was known as the "Berlin Conference," and took place during the "scramble for Africa," whose goal was to obtain as many natural resources and territory as possible.
There were disease the were spreading in the 1900's
