Which best explains how railroad were able to standardize their timetables in 1883

Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?

Over the years, the colony of jamestown failed to establish peace with powhatan american indians. make itself a permanent colony. grow enough tobacco for export to europe. establish a representative government.

Which two sentences in this passage talk about china’s efforts to curb environmental degradation?