Conversation so far:
What was the Reciprocity Treaty of 1875?
a free trade agreement between the United States and Hawaii, that allowed sugar and other products to be exported the US to be duty free.
How did this affect the people of Hawaii?
CANNOTANSWER.
How long did the treaty last?
A 7-year treaty was signed on January 30, 1875.

Question: What happened after the 7 years ended?
Self-contained rewrite: What happened to Hawaii after the 7 years of the Reciprocity Treaty ended?