<span>the most important resource for people of the plains is wood as in the plains there aren't many trees but tall grass there is much of and that grass include </span>predators with camouflage and wood is needed for weapons and homes for safety
Under the reign of President Thomas Jefferson, the exploration generally had negative slavery effects on the Americans.
<h3><u>Explanation:</u></h3>
Westward expansion of the US was taken as the key to nation's health by Jefferson. It began early in 1803. He signed a treaty with France in which the US paid a lumpsum amount of money to buy the land near Mississippi river, which infact doubled the size of the country.
Believing that the US needed to expand west to help ensure its survival and prosperity he took this chance to buy the land from Napoleon Bonaparte of France. Though this resulted not in the expansion of the empire rather it became the reason for the destruction of the republic.
When a caregiver responds appropriately to an infant, and the caregiver and the child's emotional states match, it is called interactional synchrony.
Interactional synchrony is synchronised behavior exchanged between a caretaker and an infant. For example, a caregiver may smile in response to an infant's laughter, and vice versa.
