Answer:
<h2><u><em>
400</em></u></h2>
<h2><u><em>
800</em></u></h2><h2><u><em>
</em></u></h2>
I hope this answer helps you big time!!
Discovery of the concept of zero
Foreigners and immigrants.
The last 2 are what would be selected, because the 4th amendment states: "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation...etc"