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In page 1626:

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  • March 7 – Ambrósio I Nimi a Nkanga becomes the new monarch of Kongo (in what is now Angola) after the overthrow of Garcia I Mvemba a Nkanga, restoring the Kwilu dynasty to power.
  • March 15 – Portugal declares war on Queen Nzinga of the Kingdom of Ndongo, located in what is now Angola.[citation needed] A dam failure causes the sudden flooding of the mining city of Potosí in present-day Bolivia leading to the death of thousands and the massive release of toxic mercury into the environment.[2][3]