Which of these events was happening in the world at the same time the olmecs declined from prominence in central america? a) the persian wars b) the roman empire was established c) the western roman empire collapsed d) egyptian civilization was established

D) Egyptian civilization was establishd

Explanation:

Evidence of San Lorenzo’s high culture includes the presence of mound structures, possibly an early ball court, carved basalt drains through one of the man-made mounds and the Red Palace structure with painted red floors and workshops. Around 900 BCE the site of San Lorenzo displays evidence of systematic destruction whilst La Venta, conversely, began to flourish, and becoming the new capital, it eventually supported a population of some 18,000.

The three sites of San Lorenzo, La Venta and Laguna de los Cerros all had a bilateral symmetry in their planning and at La Venta the first pyramid in Mesoamerica was constructed. It is the pre-meditated architectural layout of the religious centres of these settlements that is most striking, for example, at La Venta the buildings are placed symmetrically along a north-south axis with four colossal heads facing outwards at key points, seemingly acting as guardians to the complex. A huge ceremonial step pyramid (now a shapeless mound), sunken plaza once lined with 2-metre high basalt columns, and two smaller pyramids/mounds provide features that would be copied time and again at the major sites of later Mesoamerican cultures with whom equal attention was paid to the precise alignment of buildings. La Venta, as with San Lorenzo, suffered systematic and deliberate destruction of its monuments sometime between 400 and 300 BCE.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.

the confederate at bull run