Astronomers think planets formed from interstellar dust and gases that clumped together in a process called

Astronomers think planets formed from interstellar dust and gases that clumped together in a process called planetary accretion.

Explanation:

In astrophysics, the term accretion refers to the accretion of a celestial body which, by gravitational attraction, attracts the gaseous material that constitutes the accretion disk that surrounds it. Growth discs are common around young stars, protostars, neutron stars and black holes in the center of the galaxies. Due to the dynamics affecting these disks, a part of the orbiting gas loses some of its angular momentum, which triggers a rotational movement that leads it to fall spiraling onto the central body, thus increasing its mass.

the first historical instance of china engaging in internationalism was during the han dynasty.[1] at the start of the han dynasty, the huns in the north were attacking the frontiers of han and trying to obtain riches. emperor wu of han wanted to gain an alliance with a country called dayuezhi so the two countries could join together and fight against the huns.[2] to obtain this alliance, emperor wu sent zhang qian to the west to establish economic and cultural connections.[2] history records that during the han dynasty there were four primary avenues of contact between china and europe. they included the northern land route, the central land route, the southern sea route, and the far southern sea route.[1] the most famous of these routes is the central land route, or the classical silk road, comprising a network of roads stretching from northwest china to the ports of syria and the black sea, which passed through the oasis of the turkestans and northern persia.[1] the silk road was significant for chinese emperors because it provided dominance over central asia by developing resources and provided new markets for the export of china's most valuable resources.[1]

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts