As the united states acquired more land between 1803 and 1850, controversy ouer these territories focused on the
a.) need for schools and colleges
b.) failure to conserve natural resources
c.) expansion of slavery
d.) construction of transcontinental railroads

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

not sure might be he acquired the entire oregon territory from great britain