When was the wright brothers first flight?

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

i would go with the last one