Let's look at the options:
<em>A. The different cultures were established in Asia and carried into the Americas.</em>
This is not very likely, as the cultures would have changed too much in the time of the migration
<em>B. Constant</em><span><em> warfare among the different Native American groups led to cultural
differences.</em>
Warfare does not necessarily lead to differences, it is possible to have a comflict with people of the same or similar culture
C. The cultures developed to suit the local climate and
available resources.
I think that this is the best answer. Climate and resources often influence cultures.
<em>D. Native American leaders decided differences
would help identify members of their own tribes.</em>
</span>
Cultures are too big for single people to control them, so not
Ten Hours Act of 1847- This set a 10 hour working day for women and for children younger than 18. Since this included most workers, factory owners extended this to everyone.
Factory Act of 1802-Shortened work hours and Improved conditions for children working in cotton mills
Africa was split into pieces and every European country had a share
Outbreak of the Spanish American wars of independence in most of the empire was a result of Napoleon's destabilizing actions in Spain and led to the rise of strongmen in the wake of these wars. The defeat of Napoleon at Waterloo in 1815 caused an exodus of French soldiers into Latin America where they joined ranks with the armies of the independence movements.
Explanation:
If you are talking about the United States during World War I OR World War II, here is your answer.
The US federal government took over significant control of private corporations during wartime. The government forced many businesses to switch from their normal operations in order to produce goods for the war effort. For example, during World War II, companies like Ford switched from making cars to things like tanks and ammunition. This type of government intervention would ensure the US was completely prepared for the war.