Cleopatra reigned first with her brother Ptolemy XIII, then with her brother Ptolemy XIV, then with her son Caesarion, or Ptolemy XV.
Cleopatra's reign came to an end in 30 BC when Octavian entered Alexandria.
Cleopatra reigned for seventeen years.
No, there were no inventions of note during Cleopatra's reign.
Alexandria was the capital of Egypt during Cleopatra's reign. In fact it was the capital for the entire dynasty of the Ptolemies.
Cleopatra ruled for 17 years.
Cleopatra reigned in Egypt and for a while the surrounding territories.
From 51 to 30 BCE.
No. There are no inventions credited to Cleopatra nor any inventions accredited to her reign.
Cleopatra reigned in the Ptolemaic dynasty, established by her ancestor Ptolemy I Soter.
There are/were no artifacts unique to Cleopatra. In fact, there are very few traces of her reign.
No, there was no foreign invasion of Egypt during the reign of Cleopatra except for the invasion of Octavian, which was certainly not a victory for Cleopatra.
After Cleopatra, Rome ruled Egypt. Cleopatra was the last of the ancient line of rulers and Egypt became part of the Roman empire.