The most successful settlement in north america was in the subtropical district at the mouth of the mississippi river in what is now louisiana, where some 300 settlers and 4000 african slaves founded sugar plantations.

French.

Explanation:

Louisiana has a multicultural heritage. As the exercise mentions, the biggest colony was french but there were also Haitian, native american, african and spanish cultures clashing in that territory. Before buying the territory in 1803, Louisiana had been mostly a French colony (for a short period a Spanish one) having imported many slaves from Africa, as the exercise details.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.

citizens were able to charge more for their goods and services