He purchased Alaska from Russia in 1867. He defied Congress Tenure of Office act on grounds that it was unconstitutional (which He was impeached for, but the Supreme Court agreed with Johnson's reasoning) He was accommodating to the Southern states, and advocated less harsh treatment of the defeated rebels than other politicians of the time (which quickened the healing process from the Civil War) He served in the Senate after his Presidential term expired, showing further willingness to work for the public good despite his impeachment embarrassment. He protected the rights of the Executive branch against Congress' attempt to diminish it's powers.
The Olmec civilization used to create stone representations of human heads sculpted from large basalt boulders, these are called " Olmec colossal heads". The heads date from at least 900 BC and are a distinctive feature of the Olmec civilization of ancient Mesoamerica.
