Amay be associated with a specific behavior such as development of vision or with the development of structures of the body, such as brain configuration.

sensitive period

Explanation:

sensitive period- it is referred to that time period when children acquired information and try to learn different activities without any help from others. The most valuable time period starts from birth to age six.

At this time period, children are very reactive to some stimuli due to which they enjoy observing certain activities and finally learn to grab it.

the united states has a federal government. the president is the head of the federal government of the united states. however, each state forms its government for administration purposes. the powers of the state governments are exercised within restricted state boundaries. and citizens participate in this government by voting.