Which of the following best describes a success and a failure of the Lewis and Clark Expedition? 1. It discovered many plants and animals new to science, but the expedition also antagonized American Indians.
2. It strengthened US claims to the Oregon Territory, but it did not find a Northwest Passage.
3. It found a Northwest Passage, but it did not strengthen US claims to the Oregon Territory.
4. It successfully mapped the Louisiana Territory, but it discovered nothing of scientific interest.