An Aboriginal or Torres Strait Islander is a person of Aboriginal or Torres Strait Islander descent who identifies as an Aboriginal or Torres Strait Islander and is accepted as such by the community in which he (she) lives.
This question is a little ambiguous as it doesn't give reference to what 'favourable' is but I've attached a diagram that depicts the different types of climate in Brazil to help.
(This is more of a geography question than history)
Agriculture is thought to have developed independently throughout the
world, so there is not necessarily one particular group of people that
could be considered to be the first. However, of the available options
the most likley to be correct would be a) Nomads in Central Asia. The
'fertile crescent' in the East is often referred to in this respect, as
being the first place agriculture was properly developed.
Northern: No slaves, mostly republican (our democrat) ideas, economy was based on trade and business
Southern: Slavery was supported, mostly (our idea of) republican, their economy was based on plantations and slaves
Hope this helps! Please let me know if I'm wrong or missed something. :)
