What is the meaning of “underpins” as it used in paragraph 19?

support (a building or other structure) from below by laying a solid foundation below ground level or by substituting stronger for weaker materials.

Explanation:

This is the general definition of underpin

hancock was president of congress when the declaration of independence was adopted and signed. he is primarily remembered by americans for his large, flamboyant signature on the declaration, so much so that "john hancock" became, in the united states, an informal synonym for signature.

explanation:

anne started to write her events in her journal everyday considering it someone would find it .