How does a foot powered reeling machine from ancient china work? A structural synthesis and each part explained would be great, like which part makes the silk thread and how does it untangle the fibers?

What affected the second industrial revolution have on transportation

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?

Search america's open door policy with china beginning in 1899. explain how relations with the united states and china have changed and the effects of the open door policy on both countries.