What event of the mid-1900s greatly contributed to increased cooperation between european nations?

the supreme court ruled 5-4 that section 4 of the voting rights act of 1965 was unconstitutional. the supreme court found section 4 unconstitutional because of the age of the coverage formulas. the supreme court's opinion notes: "voting discrimination still exists; no one doubts that.jul 7, 2014

is the answer buudy

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.