The Kingdom of Armenia was an ancient state located in the region of the Armenian Highlands, existing from around 321 BC to 428 AD. It was one of the first nations to adopt Christianity as its state religion in the early 4th century, significantly influencing its culture and identity. The kingdom reached its peak under the rule of Tigranes the Great, expanding its territory and becoming a major power in the region. The kingdom's capital was Artaxata, strategically positioned along trade routes. The Armenian language and culture flourished during this period, with notable contributions to literature and art. The kingdom eventually fell under the influence of neighboring empires, leading to its decline and eventual absorption into the Sassanian Empire.