Checks and balances help prevent one branch of government from getting to much power. Legislative branch has the Senate confirm presidential appointments. Against judicial branch establish court and size. Executive branch has veto power over laws created by the legislative branch. Appoint judicial branch judges.
Labor unions fought for reasonable working hours, safe working environment, and, better wages. Child labor was also stopped at that time and improved health benefits for injured or retired workers.
The settlement of the Americas began when Paleolithic hunter-gatherers entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum. Due to this migration the mammoths were hunted to extinction, most of Americas animals that were alive before they entered the Americas were eventually hunted to extinction
The answer is atomic bombs
D. Appointing dictators
All of the following powers were exercised by the Roman Senate during the Republic except for appointing dictators because many dictators mainly rose by power, wealth, or forcing their way up.