John Calvin created the modern democracy. For example the US, the people get to vote for who they want for their leader and the person with the majority of the votes wins.
I believe that they used the Oregon Trail
One of the ways in which the American Revolution affected women is that it led many of them to help the cause by doing things like making clothing for the troops, and offering troops their homes in times of crisis. They would also give them food and supplies if they were able.
The open door policy was principles that was installed in 1899 and then the 1900s to Have a protection of equal or even trading among countries
The correct answer for this question is B.