During his long reign he used many methods to try to maintain his great habsburg empire. mark the statement if he tried one of the methods below.
a. he crushed a revolt by his hungarian subjects and executed their leaders.
b. he refused to agree to a written constitution, even one that maintained all his powers.
c. he split his empire into austrian and hungarian parts, and set up a parliament in budapest.
d. he advanced the rights of his slav subjects, such as czechs, slovaks, croats, and slovenes.
e. he increased his possessions in the italian-speaking and german-speaking parts of his empire.