What's the distance between (-4,5) and (-6,-12

Which of the following countries has declared itself nuclear free

Political boundaries are determined by the political party in control at the time. true or false

Which statement about portugal is not true? a. it granted independence to its last colony in 1975 b. it has avoided conflict with spain c. it was a leader in european world exploration in the 1400s d. its economy is changing from agricultural to industrial b. it has avoided conflict with spain