Mayor Daley deployed thousands of police officers to restrain the protesters.
When the Democratic National Convention met in Chicago in 1968, thousands of protesters staged demonstrations against the US involvement in the Vietnam War. Chicago's mayor, Richard Daley, sent out 12,000 local police officers against the protesters and called in thousands more state and federal officers. The situation became a major riot between protesters and police that came to be known as "The Battle of Michigan Avenue."
<span>D. Monopolies shut out competition
Monopolies are prevented because of the Sherman Antitrust Act of 1890, which regulates and takes apart monopolies, as well as protecting small business owners from collapsing and consumers from high prices.
Hope this helps</span>
Britian had many rivers and sea ports
Uh, I think you got the wrong subject. This is <em>History, </em>not Math.