The nation has made remarkable strides in democratisation in recent years.

democratisation 是名词，由动词 democratize（使民主化）加上名词后缀 -ation 构成。democratize 本身由名词 democracy（民主）加上动词后缀 -ize（使...化）组成。整个词表示"民主化"的过程或状态。