Read the excerpt from Into the Unknown by Stewart Ross. Which text feature best supports the details in the excerpt? The ship that brought Livingstone back to East Africa in May 1858 was a 157-foot steamer called the Pearl. On it were the pieces of a smaller river-going paddle steamer named Ma Robert (after Mrs. Livingstone, whose eldest son was named Robert). The British Government had built it especially for the explorer, who was now a celebrity. Livingstone's plan was to sail the Pearl 260 miles upriver to the town of Tete, unloading stores along the way.