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| 1780 |
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| The Casa Pia established in Lisbon for the care and education of poor orphans. | 1 |
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| 1790 |
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| All vestiges of feudal justice abolished. The administration of justice rationalized and centralized. | 2 |
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| 1792 |
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| Insanity of Maria and regency of her son John, who, with the ardent support of the clergy, undertook a drastic repression of all revolutionary agitation and thought. | 3 |
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| 1796 |
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| Royal Public Library established. | 4 |
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| 1801, Feb.–Sept |
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| War of the Oranges with Spain, resulting from dealings between Spain and France. After a Spanish invasion the Portuguese made peace. By the Treaty of Madrid (Sept. 29), Portugal paid a heavy indemnity and renounced the treaties with Britain. | 5 |
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| 1807, July |
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| Napoleon sent Portugal a directive on how to implement the continental system (See Nov. 21). Portugal was hesitant to break off ties with England but was under continued pressure from Napoleon. | 6 |
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| Aug |
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| French and Spanish envoys gave Portugal an ultimatum: Declare war on England by Sept. 1 or be invaded. | 7 |
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