Clocks that operated without a pendulum had to be invented before ...

[cherise1989]

Clocks that operated without a pendulum had to be invented before longitude at sea could be calculated.
 
  Indicate whether the statement is true or false

Question 2

Observers in the southern hemisphere use the North Star (Polaris) to determine their latitude.
 
  Indicate whether the statement is true or false

[kilada]

Answer to Question 1

TRUE

Answer to Question 2

FALSE

[cherise1989]

Excellent

[sultansheikh]

Thanks for the timely response, appreciate it