* The death of her beloved brother Austin's wife, Susan, in 1855. This event left Dickinson deeply saddened and is reflected in many of her poems about loss, death, and mortality.
* Her own declining health and isolation. Dickinson spent most of her later years living in seclusion, which gave her ample time to contemplate life, death, and the spiritual realm, themes that dominate her poetry.
* The influence of her father, Edward Dickinson, who was a strict and religious man. Dickinson's upbringing and her father's influence contributed to her interest in themes of faith, doubt, and the complexities of human nature.
* The intellectual and literary circles she was exposed to. Dickinson was well-read and familiar with the works of renowned poets and writers, which undoubtedly influenced her own style and themes.
* The social and cultural changes of the 19th century. The rapid industrialization, social reforms, and changing gender roles of the time contributed to Dickinson's exploration of themes of societal pressures, isolation, and individual identity.
It's important to remember that Dickinson's poetry is complex and multifaceted, influenced by a myriad of experiences and ideas. Each of these events, in conjunction with many others, contributed to the unique and profound body of work that is Emily Dickinson's poetry.