Louisiana Purchase, Lewis and Clark, & SacagaweaTeaching Westward Expansion and want to tie it into your reading standards? This unit includes three detailed, kid-friendly passages- one about the Louisiana Purchase, one about Lewis and Clark, and one about Sacagawea- which can be used for close reading or informational purposes in Social Studies. Comprehension Questions:★ all three passages include cause and effect practice★ a main idea activity for the Louisiana Purchase★ a mapping/followin