Gulliver's travels is jonathan swift's statement on
a. the superiority of religion over politics.
b. the importance of middle class education and employment.
c. the importance of ordinary people's activism in government.
d. the silliness of religious and political bickering.

Gulliver’s Travels implicitly poses the question of whether physical power or moral righteousness should be the governing factor in social life. Gulliver experiences the advantages of physical might both as one who has it, as a giant in Lilliput where he can defeat the Blefuscudian navy by virtue of his immense size, and as one who does not have it, as a miniature visitor to Brobdingnag where he is harassed by the hugeness of everything from insects to household pets.

Hope I helped you find your answer.. 

Walked would be the participle here. as it is a verb ending in -ed.