What are toussaint l'ouverture's main concerns?

I don't know the context for the question, do you mean at any specific point, or generally in life?

Toussaint L'Ouverture was a free slave in Saint-Domingue, but he felt he had a "free soul". I think that generally, in his life, the biggest concern would be to free slaves and abolish slavery; and the efforts to end slavery in Saint-Domingue are known as the only Slave Rebellion that succeeded in making an independent country!

The preamble of the constitution was written to explain the aim of the constitution