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The Chandra X-ray Observatory must use:
French Revolution
The period of significant social and political upheaval in France between 1789 and 1799, resulting in the decline of monarchies and churches and the rise of democracy and nationalism.
Fur Trade
The exchange of animal furs (primarily beaver pelts) between traders and indigenous peoples in North America, a significant economic activity from the 16th to 19th centuries.
Expel the British
The act of driving out British forces or authority, often in the context of struggles for independence by various nations.
Federal Power
The authority and influence held by a federal government, encompassing powers shared or distributed between the national government and its subdivisions.
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