This is the hour,this is the day ,for our two peoples to ris

This is the hour,this is the day ,for our two peoples to rise
着重点是which can build a new and better world .定语从句的先行词是哪个?
This is the hour,this is the day ,for our two peoples ,to rise to the heights of greatness which can build a new and better world .

this 主语
is 谓语
the hour, the day 并列 表语
for our two peoples 插入语
to rise to the heights of greatness(表语的)补语. 用语补充说明表语的状况
which can build a new and better world 定语从句, 修饰greatness
是一种可以建造更新,更好世界的greatness.