Explanation:The weather is usually good in June, so cookouts are popular at these Juneteenth celebrations. People gather around open-pit barbecues, and almost every community has their own style to make barbecued beef or pork. Since beef and pork were not traditionally available every day in communities of freed enslaved people, this was a special treat. Warm summers also are great for drinking cold strawberry soda, also historically popular in these communities. Younger family members learn about the history of their ancestors and communities at family reunions held during Juneteenth celebrations. As enslaved peoples, many of these ancestors were separated from family members when some family members were sold to other slave owners, so family was especially important to them. Traditional songs, especially spirituals, are popular at Juneteenth celebrations. A song written as a poem by NAACP leader James Weldon Johnson called "Lift Every Voice and Sing" is often performed during these celebrations. It is a song that reflects the struggle of enslaved people to be free. Other popular forms of music that originated in African American communities, like blues and jazz, are also performed. Community elders are often called on to discuss the history of Juneteenth and their communities. Local ministers lead prayers and the singing of spirituals. Some speakers teach younger community members the history of Juneteenth.
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Rene Descartes was a key figure in the scientific revolution and had some stuff to do with math so probably him ( don't hold me to that and check other peoples answers)
