The American Bison is a very large type of cow. They once travelled in massive herds over America, but they were killed almost to extinction by people in the 19th century.
A bison has a shaggy, long, dark brown winter coat, and a lighter weight, lighter brown summer coat. Bison can reach up to 2 meters (6.6 ft) tall, 3 meters (10 ft) long, and weigh 400 kilograms (882 lb) to 1,000 kilograms (2,205 lb).
Bronze is a dark metal made from an alloy of copper and tin. Bronze was one of the earliest and most useful metals discovered by mankind. It was harder than copper, stone or wood and could be made into weapons, containers and tools.
Bronze is still widely used today to make statues, door handles and jewelry.
A button is a small, usually flat object that you use to keep your clothes shut. Buttons can be made of wood, metal shell or plastic. There is usually some holes through the button or a loop under the button so they can be stitched to your clothes. You fasten a button by passing it through a matching hole.
A cannon is a weapon that uses an explosive charge inside a heavy, metal barrel to force out a heavy metal ball called a cannonball at high speed. Cannonballs usually weighed around 19kg.
Cannons are rarely used today, however when they were commonplace they were extremely dangerous. They were particularly useful in battles between ships, as a cannonball could easily go through the side of a wooden ship, which would make it take on water and sink.