Evidence would be that child labor laws were put in place since children would work long hours for little pay in very very rough conditions.
His plan to withhold punishment from the central powers
The black death arrived in Europe when travelers started coming back from different countries, it was spread by rat bugs poor hygiene and air borne.
During his time in office, Mier y Teran was concerned over the inability of incoming American settlers to adapt to the Mexican cultures. Mier y Teran's health was failing and he felt hopeless about the problems of the colonization in Texas.