Answer:the significance of an inauguration ceremony is to celebrate a new president of the US. it is held as a "little party" hopes this helps! <3 (please mark brainliest if i helped <3)
Explanation:
Achievements and contributions: new inventions such as soap bars, toothpaste, valves, mechanized waterclocks, and frequency analysis. Scientific breakthroughs in experimental physics.
Notable figures: Ibn al-Haytham (Alhazen), Abhas Ibn Firnas, al-Jazari.
Answer:
The Siege of Leningrad is a event which took place during WWII. This was a was a prolonged military blockade undertaken from the south by the Army Group North of Nazi Germany against the Soviet city of Leningrad on the Eastern Front in World War II.
