I believe the answer is the closing of the port.
The correct answer among the choices is lingua franca. In multilingual
societies and populations, a lingua franca is adopted as a medium of
communication between people with different vernacular languages. Countries
like India and the Philippines with a post-colonial past and a plethora of
local languages use English as their lingua franca, for example.
The main leaders of the Italian Unification Movement are Giusseppe Mazzini, Giusseppe Garibaldi, and Camilo Cavour.
Lao Tzu attempted to solve the problems of the period of the warring states through his teachings of the Daodejing (Classic of the Way and of Virtue). In his teachings, he emphasized following the way of nature (the Dao). He also stressed on simplicity, meditation, and living in harmony with nature
