 Complete the following phrase:  On July 16, 1838, Duarte and others established a secret patriotic society called La Trinitaria, which helped undermine Haitian occupation. Some of its first members included Juan Isidro Pérez, Pedro Alejandro Pina, Jacinto de la Concha, Félix María Ruiz, José María Serra, Benito González, Felipe Alfau, and Juan Nepomuceno Ravelo. Later, Duarte and others founded a society called La Filantrópica, which had a more public presence, seeking to spread veiled ideas of liberation through theatrical stages. All of this, along with the help of many who wanted to be rid of the Haitians who ruled over Dominicans led to the proclamation of independence on February 27, 1844 