What was Harriet Tubmans greatest aceivemant

 Civil War spy

Explanation:

Harriet Tubman's most important achievement was being a Civil War spy. Harriet Tubman helped many people as a spy, without her work helping slaves, it would have been very hard

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d

answer; the edward snowden leaks of nsa classified material;