What gave some cultures a head start and why

farming gave some cultures an enormous head start, and those who were lucky enough to have the most productive crops and animals became the most productive farmers.

Hope this helped :)

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.

(d) take jobs from american workers.