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some of the countries that use the federal system are...
United states
Mexico
Germany
Canada
Australia
and Brazil
In the nineteenth century, Mexican American, Chinese, and white populations of the United States collided as white people moved farther west in search of land and riches. Neither Chinese immigrants nor Mexican Americans could withstand the assault on their rights by the tide of white settlers.
I think its because of power or it commands more of respect or it was for decoration for the helmet. i hope this helps you.
Answer:
incorporated into laws by either the state or federal government.
