Answer and explanation;
-Federal land grant legislation was so contentious because northerners and Republicans wanted to free up large plots of land to settlement by individual farmers, while Southern Democrats sought to make the lands of the west available only to slave-owners.
-Congress had passed a homestead act in 1860, but President James Buchanan, a Democrat, vetoed it. Only after the Southern states had seceded from the union in 1861 could the Homestead Act be passed.
-After Congress was emptied of Southern slave holding legislators, President Abraham Lincoln, a Republican, signed the Homestead Act of 1862.