What is the biggest barrier to girls education worldwide

Which of the following was probably the most difficult challenge facing construction of the railroad?

1400s to 1700s: power shifted to persians and ottoman turks of southwest asia, who fought for 300 years in the region. true or false?

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.