The correct answer b) social contract.
the other answers are wrong, for example: the divine right of king would mean that the king has a right to rule and does need an agreement from the people and natural rights are rights that all people have but the agreement, is not a right, but an agreement, or in other words: contract.
They often collapsed of exhaustion, and we're not allowed to bury their dead, and had to keep walking no matter their physical condition
Buddhism and Hinduism which had a great influence on the Southeast Asia civilization, spread more successfully when Indian merchants as well as Brahmans and Buddhists monks settled down throughout this region bringing with them their religious beliefs around 530 BC. Besides, when those merchants travelled along the silk roads, they shared their faith with other societies contribuiting to the spread of these two major religions.
The first president of the United States was George Washington.
George Washington was president from April 30, 1789 until March 4, 1797.
I think that the better answer is that the industrial revolution created economic opportunities for the middle class (bourgeoisie) and the desire for profits without government interference. Transcontinental railroads made possible people movements from agricultural farms to urban cities. Electricity, new machines and inventions atractted people to industrialized environments. These facts emerge subsequently into capitalism because the increase of the desire of posessions and the persuit of a wealthy life.