What had to happen in Panama before the canal could be built? French contractors had to be hired.
A cure for malaria had to be discovered.
The US Army had to be sent to Panama.
Panama had to gain independence from Colombia.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.

answer; when the government fails to protect the fundamental rights of the people;

answer; /// the above statement is (true);