The invention that led to major expansion of trade in the han period was

the development of fore-and-aft rigging and rudders on ships.

Explanation:

The han period was a period between 202 BC and 220 BC, when the han dynasty created by the rebel leader named Liu Bang was in existence. The han dynasty was ruled by the House of Liu.

The invention that led to major expansion of trade in the han period was the development of fore-and-aft rigging and rudders on ships.

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.