It was to protect the people.
Generally speaking President Coolidge believed the creation of wealth "benefitted the nation as a whole," since he believed in "top down" economics.
C) Pedro Cabral claimed land in South America for Portugal, resulting in the use of Portuguese in Brazil today. This happened on the 22nd of April in 1500 with the docking of his fleet on what is now the Brazilian coast. The first Portuguese settlement was in 1532, although colonization started in 1534, when the then King of Portugal divided Brazil into fifteen different territories.
The correct answer is the Adams-Onis Treaty.
This 1819 land agreement between the United States and Spain. This land treaty helped to establish a clear between Spanish and US territories. In this treaty, the US gained the rest of modern day Florida while the Spanish border would now definitively start at the Sabine River.