1) The first photograph of a black hole was captured in 2019 using a network of telescopes around the world.

2) The windshield wipers were invented by a woman named Mary Anderson in 1903.

3) The concept of sovereignty refers to the supreme authority and power of a state to govern itself, make decisions, and control its own territory without interference from external forces.

4) The Black Lives Matter movement gained renewed momentum in 2020 following the killings of George Floyd, Breonna Taylor, and others, sparking protests and discussions on systemic racism, police reform, and social justice around the world.