How many years was it between the first human spaceflight launch to the end of the space shuttle program?

Which pronoun has an unclear antecedent in the following sentences? the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. it made them happy. a. their b. it c. them d. no unclear antecedents

Adefendant visited her doctor to seek treatment for a bullet wound. while he was treating the wound, the doctor asked the defendant how she was shot. the defendant replied that she was struck by a police officer’s bullet while running away from a jewelry store she had robbed, but she implored the doctor not to tell this to anyone. the doctor promised that he would not. although the defendant was never charged by the police, the owner of the jewelry store brought suit against her seeking the value of the stolen goods. the defendant denied robbing the store. at the trial, the owner calls the doctor to testify to the statement made to him by the defendant. the defense attorney objects on the ground that such testimony is barred by the jurisdiction’s physician-patient privilege. should the objection be sustained?

What were some benefits of the lewis and clark expedition?