Which part is the stomach and large intestine are a part of which organ system?

In the mid-1800s, native americans who had lived in the westtraded their manufactured goods with settlers.were able to resist diseases carried by settlers.offered their services as guides to settlers.prevented settlers from moving onto their territory.

Who was the democratic nominee for president in the election of 1868? a) ulysses s. grant b) horatio seymour c) samuel tilden d) charles sumner

Ineed a summary over thurgood marshall ! me