The answer is the truman doctrine
Answer:
I believe it is C
Explanation:
Because when they signed it officially made the world aware that they were no longer apart of Britain and they were their own country.
The convention adopted an "Ordinance of Secession" by a vote of 166 to 8, which was ratified by a popular referendum on February 23. ... — Texas Secession Convention, A Declaration of the Causes which Impel the State of Texas to Secede from the Federal Union,
Answer:
Explanation:
It could be the enlightenment.
I know it's not in the suggestions but I think it's Russia you know, correct me if I'm wrong btw.