How often can you see halley's comet from earth? it is either every 18-19 years, every 44-45 years, every 75-76 years, or every 123-124 years.

During he 1840s, more americans than british settled in the oregon country. how do you think this settlement influenced negotiations with the british over the territory

True or false? correlations can only be negative.

Match the following items 1. formed by theodore roosevelt in 1912 2. republican president 3. a person who currently holds an office 4. democratic president 5. formed by ross perot in 1992 6. to yield or surrender; admit or acknowledge options; a. jimmy carter b. dwight d. eisenhower c. bull moose party d. united we stand party e. concede f. incumbent