Identify which of the following constitutional directives are formally categorized by political scholars as 'Liberal-Intellectual Principles':
1. The directive aiming to secure a uniform civil code for all citizens across the entire national jurisdiction.
2. The directive mandating the state to promote international peace, security, and honorable relations between nations.
3. The directive instructing the state to actively promote the proliferation of local cottage industries in rural areas.
4. The directive compelling the state to secure the participation of laborers in the administrative management of industries.