The increased migration and increased population that the United States saw during (any) era are examples of "<span>c. demographic and environmental changes," since these have to do mainly with population distribution. </span>
<span>Erastus Ladd
suggested a Free State election in Kansas Territory when he to Hiram Hill who
at that time, returned from the Territory of Massachusetts. Ladd also
anticipated the development of railroad line between Lawrence and Delaware
lands when he experience delay in Hill’s receiving a map of West Lawrence.</span>
I suggest you just write things are the *key* details in the Declaration of Independence, but it's best to get some background information first.
The state that the United Nations labeled an aggressor and sent forces to fight in 1950 was North Korea.
I hope I helped!<span />
Without rain vegetation would die also the lakes would dry up
Without food and water animals cannot thrive so they will die off.
