Ineed three main ideas from this passage about lewis and clark, i find it very confusing.

this morning i arrose very early and dispatched drewyer and the indian down the river. sent shields to hunt. i made mcneal cook the remainder of our meat which afforded a slight breakfast for ourselves and the cheif. drewyer had been gone about 2 hours when an indian who had straggled some little distance down the river returned and reported that the whitemen were coming, that he had seen them just below. they all appeared transported with joy, & the chef repeated his fraturnal hug. i felt quite as much gratifyed at this information as the indians appeared to be. shortly after capt. clark arrived with the interpreter charbono, and the indian woman, who proved to be a sister of the chif cameahwait. the meeting of those people was really affecting, particularly between sah cah-gar-we-ah and an indian woman, [1] who had been taken prisoner at the same time with her, and who had afterwards escaped from the minnetares and rejoined her nation. at noon the canoes arrived, and we had the satisfaction once more to find ourselves all together, with a flattering prospect of being able to obtain as many horses shortly as would enable us to prosicute our voyage by land should that by water be deemed unadvisable.

we now formed our camp [2] just below the junction of the forks on the lard. side in a level smooth bottom covered with a fine terf of green swoard. here we unloaded our canoes and arranged our baggage on shore; formed a canopy of one of our large sails and planted some willow brush in the ground to form a shade for the indians to set under while we spoke to them, which we thought it best to do this evening. acordingly about 4 p. m. we called them together and through the medium of labuish, charbono and sah-cah-gar-weah, we communicated to them fully the objects which had brought us into this distant part of the country, in which we took care to make them a conspicuous object of our own good wishes and the care of our government. we made them sensible of their dependance on the will of our government for every species of merchandize as well for their defence & comfort; and apprized them of the strength of our government and it's friendly dispositions towards them. we also gave them as a reason why we wished to petrate the country as far as the ocean to the west of them was to examine and find out a more direct way to bring merchandize to them. that as no trade could be carryed on with them before our return to our homes that it was mutually advantageous to them as well as to ourselves that they should render us such aids as they had it in their power to furnish in order to haisten our voyage and of course our return home. that such were their horses to transport our baggage without which we could not subsist, and that a pilot to conduct us through the mountains was also necessary if we could not decend the river by water. but that we did not ask either their horses or their services without giving a satisfactory compensation in return.