What is associated with: around 1784 85 henry cavendish discovered that when he combined hydrogen air it exploded produced this?

What is associated with: around 1720 this mississippi port became the capital of frances louisiana territory? What is associated with: around 1725 this great baroque composer wrote 6 english suites for harpsichord? What is associated with: around 1766 bc the shang kingdom arose along the valley of this river also known as the huang… What is associated with: around 1780 this grandfather of charles darwin invented a pyrometer to measure high heat in hi… What is associated with: around 1800 parson weems wrote of this mans unauthorized juvenile lumberjacking? What is associated with: around 1800 this english romantic landscape painter took a studio at 64 harley street in londo… What is associated with: around 1800 this scientist from como italy developed a forerunner of the electric battery? What is associated with: around 1807 john colter explored yellowstone after he was released from this duos expedition?