Try to check google or something
The United States wanted to build the Panama Canal in order to save time and money on trading. Before the Panama Canal, people had to sail all the way around Africa in order to get to the other side of the world, which costed much more money and took a lot longer. The US owns the canal because of the Hay-Bunau-Varilla treaty, which gave the rights to the USA to build and manage it.
I believe that they are the following:
1. Monarchs do not have absolute authority.
2. The monarchs must have parliament's consent to suspend laws, levy taxes, or maintain an army.
3. The monarch cannot interfere with parliamentary elections and debates.
4. The people have a right to petition the government and to have a fair and speedy trial by a jury of their peers.