The camera is a relatively new invention, dating back to the however, the science of photography dates back centuries, with the first example being invented by a scientist around ad. a. (1) 18th century; (2) 2500 b. (1) 1800s; (2) 1000 c. (1) 1900s; (2) 4500 d. (1) 20th century; (2) 3000

This is a form of government run by elected leaders. this is a type of government in which a group of individual states are united under astrong, central government. this is a system of government in which the people participate directly in making allpublic policy. this is form of government in which a monarch is the head of state but his or her powersare restricted by law, usually within a parliamentary system. in this type of government, the elected head of the executive branch acts independentlyof the legislative and judicial branches. in this type of government, there is no clear-cut separation of powers between thelegislative and executive branches, though the legislative has most of the governmentalpower. in this type of government, the institutions of the state are governed as a single unit, with one constitutionally created legislature. this is a type of government in which power is held by a single, self-appointed ruler.